• New look: Gold Standard. Black, white and gold, and it follows your device's Light or Dark setting. • Two parts added to the FAR library: Part 22 (Requirements for Non-Type Certificated Aircraft) and Part 38 (Airplane Fuel Efficiency Certification). Open them or tap Download All to add them. • NTSB Part 830: it now appears in FAR search every time, it can be deleted from Downloads, and Open in Safari opens the right page on eCFR.gov. Open in Safari on an appendix now opens that appendix. • Other bug fixes.

• Private Pilot Guide: 185 new questions on knowledge items that had none, including a complete Night Operations section (vision, airport lighting, aircraft lighting rules, night navigation and illusions), weight and balance, radio procedures and transponder use, preflight inspection, flight deck management, traffic patterns, pilotage, performance, human factors, emergency descent and emergency equipment. • Commercial Pilot Guide: 170 new questions on the same topics, placed on the matching Commercial ACS elements. • Every new question cites its FAA source (PHAK, AFH, AIM, 14 CFR, Aviation Weather Handbook) and carries a fresh set of quiz answers, each checked against the source.

FREE DEMO GUIDE Try CheckPrep before you buy: a free Private Pilot Sample covers four ACS tasks with flash cards, quizzes and tappable FAA citations. RE-VERIFICATION Every question in the Private, Instrument, Commercial and Commercial Multi Add-On guides has been re-verified line by line against the FAA source it cites. Corrections were applied and the quiz distractors rebuilt. NEW • Airman Certification Standards in References. The Private, Instrument, Commercial and ATP ACS documents are now in the library, and a citation opens the PDF on that exact element. • AIM and FAR search results open the section with your matching paragraphs highlighted and scrolled into view. FIXED • AIM sub-paragraph labels follow the FAA's Change 3 update again, so a citation like AIM 5-2-7(a)(1) lands on the right paragraph. • AIM NOTE, EXAMPLE and PHRASEOLOGY boxes display as boxes under the paragraph they belong to. • AIM figure and table captions no longer run together. • AIM paragraph bookmarks keep pointing at the right paragraph after the FAA renumbers a section. • Flash Cards and Quiz: Unchecking one task no longer clears tasks in other Areas of Operation. Partially filtered areas now show a minus badge, and tapping it brings all of that area's tasks back. • Aircraft guides are listed alphabetically in the Store.

Every question in the Private, Instrument, Commercial and Commercial Multi Add-On guides has been re-verified line by line against the FAA source it cites. Corrections were applied and the quiz distractors rebuilt. NEW • Airman Certification Standards in References. The Private, Instrument, Commercial and ATP ACS documents are now in the library, and a citations opens the PDF on that exact element. • AIM and FAR search results open the section with your matching paragraphs highlighted and scrolled into view. FIXED • AIM sub-paragraph labels follow the FAA's Change 3 update again, so a citation like AIM 5-2-7(a)(1) lands on the right paragraph. • AIM NOTE, EXAMPLE and PHRASEOLOGY boxes display as boxes under the paragraph they belong to. • AIM figure and table captions no longer run together. • AIM paragraph bookmarks keep pointing at the right paragraph after the FAA renumbers a section. The AIM re-downloads once after this update.

• Bigger reference library: 25 new Advisory Circulars plus the current revisions of 9 more, including AC 91-79B (landing performance) and AC 90-114C (ADS-B). Private, Commercial and Multi citations now point at the current revisions. • Two new handbooks in References: Aircraft Weight and Balance Handbook (FAA-H-8083-1B) and the Aviation Maintenance Technician Handbook — Airframe (FAA-H-8083-31B). • Five FAA legal interpretations and two InFOs added. • More tappable citations: Airplane Flying Handbook, Instrument Procedures Handbook and Risk Management Handbook chapter references now open the chapter directly. Citations to documents not in the library show as plain text instead of dead links. • Fixed AIM figures showing "Image unavailable" after an update. • Cleaner cards: single-question items no longer show a "(1)" badge. • Advisory Circulars you downloaded under a superseded revision are cleared on first launch; re-download them from References to get the current edition. • Coming soon: an ATP study guide. You'll see a preview card on the ACS Review tab.

• Instrument, Commercial, and aircraft-specific ACS guides are now just $4.99; checkride oral prep built around your DPE's exact framework, now within reach for every pilot. • Minor improvements and bug fixes.

• Instrument, Commercial, and aircraft-specific ACS guides are now just $4.99; checkride oral prep built around your DPE's exact framework, now within reach for every pilot. • Minor improvements and bug fixes.

Continued Study Experience Refinements • Sharpened multi-area task selection in Flashcard and Quiz study modes • Polish improvements throughout the app

Content Accuracy & Polish • Sharpened content accuracy across Private, Instrument, Commercial, and Multi-Engine ACS guides • Unified question and answer presentation for a more consistent study experience across all guides Streamlined Question Library • Consolidated redundant entries so each question appears once in its intended location • Continued refinements to content organization throughout the Q&A database

Expanded Q&A Content • 59 new questions added across electronic flight bags, stalls, pitot-static systems, standard rate turns, high-altitude operations, and avionics • Broader coverage across all major ACS tasks • Content quality and organization improvements throughout the Q&A database Unified Mastery Tracking • Answer a question once and it counts everywhere the same question appears • Credit propagates across ACS guides and within the same guide • Master a weather theory item in Private ACS and it is credited in Instrument and Commercial as well • Mastery reflects your understanding of the content, not the specific task code where you encountered it A Note on Session History • Your ACS study history, mastery progress, and all purchases are unaffected Your Purchases • Nothing about your purchases changes • Individual aircraft content for Cessna 172SP, Cirrus SR20 G7+, and Diamond DA42 NG continues to unlock aircraft-specific questions within Private, Commercial, and Multi ACS guides exactly as before

• Aircraft selection has moved to Settings. Choose your aircraft once per ACS guide and it applies across ACS Review, Study Modes, and Mastery. • New Cessna 172SP content: engine cooling, horsepower, RPM limits, oil system Q&As (capacity, temperature, pressure, filter). • New Diamond DA42 NG content: oil capacity per engine, short field takeoff airspeeds. • Fixed an issue where reviewing a completed session showed "Question unavailable" for all questions. • Sessions now remember which aircraft was selected when the session was taken. • Fixed a display issue where certain temperature answers showed raw code instead of the degree symbol. • Resolved a data conflict in the Commercial ACS that could prevent session reviews from loading. • Content accuracy updates across multiple Q&As.

• Fixed iCloud sync for study progress across devices • Updated Q&A content for accuracy • Bug fixes and stability improvements

ADDED • 53 AFM references for Diamond DA42 NG Q&As covering performance limits, flight controls, powerplant, propeller system, cooling, fuel & oil, electrical, and environmental sections FIXED • 1 Q&A assigned to incorrect ACS task code (moved from Performance & Limitations to Short-Field Takeoffs)

AIRCRAFT-SPECIFIC STUDY CONTENT • New purchasable aircraft content packs: Cessna 172SP, Cirrus SR20 G7+, and Diamond DA42 NG • Aircraft-specific Q&As integrated into ACS Review, Flashcards, Quizzes, and Mastery Tracking • Select your training aircraft per ACS guide; content filters automatically across all study modes • Mastery tab now shows which aircraft content is included in your proficiency calculations DOWNLOADS REDESIGNED • New two-tier layout: summary card at the top shows overall download status at a glance • Collapsible detail rows for each reference type (FAR, AIM, Books, ACs, LOIs, InFOs) • One-tap "Update All" to refresh your entire reference library STORE UPDATES • Aircraft-specific content section added to the Store • Diamond DA42 NG content requires the Commercial Multi Add-On package UNDER THE HOOD • Bug fixes and performance improvements

Select your checkride aircraft and study questions tailored to your airplane. Aircraft-specific Q&As now available for the Cessna 172SP, Cirrus SR20 G7+, and Diamond DA42 NG. CheckPrep v26.4.2 Release Notes: -New: Commercial Multi-Engine Add-On ACS Review Guide with 236 Q&As covering multi-engine aerodynamics, Vmc factors, critical engine, and Diamond DA42 NG systems. -New: 178 Cessna 172SP and Cirrus SR20 G7+ aircraft-specific Q&As for Private and Commercial guides covering V-speeds, systems, electrical, fuel, and performance. -Improved: ACS Review search now matches individual keywords for better results. -Improved: Store page redesigned with streamlined purchasing and offer code redemption.

CheckPrep v26.4.1 Release Notes: Search Improvements - FAR and AIM searches now show results in real-time as you type; no more pressing Submit and waiting - FAR search combines instant local results with eCFR API results for the most comprehensive coverage - Search keywords are now bolded in excerpt previews across all reference types - Fixed search excerpts in ACs, LOIs, and InFOs appearing outside the result card - Consistent search result styling across all 7 search surfaces (FAR, AIM, ACs, LOIs, InFOs, Books, and unified Reference search) Pre-Tabbed FARs -Private Pilot: expanded from 51 to 61 key FARs (added 43 App. A, 61.45, 61.51, 61.93, 91.7, 91.9, 91.109, TFR regs, and more) -Instrument Rating: expanded from 21 to 32 key FARs (added 91.176, 91.180, 91.191, equipment regs, and more) -New Commercial Pilot tab with 42 key FARs covering Parts 1, 61, 67, 91, 119, and NTSB 830 -Pre-tabbed entries now labeled "FAR" / "NTSB" instead of section symbols Reference Links -FAR 43 Appendix references (A, D, etc.) in Q&A content are now tappable links

Commercial Pilot content is now available in CheckPrep! Study with Flashcards, Quizzes, and the new CheckPrep Commercial ACS Review Guide. Free during Early Access. CheckPrep v26.3.6 Release Notes - Added 400+ new flashcards and quiz questions to the Commercial Pilot ACS Review Guide - Updated formatting for improved readability on detailed answers like decompression sickness, medications, hazardous attitudes, and the 3P Model - Added Bell 2009 Letter of Interpretation (Known Icing Conditions) to the reference library - NTSB Part 830 references now link directly to the regulation in the reference library - Renamed Instrument clearance trainers to "Departure and Approach Clearances (Beta)" on the Store page - Stress-related Q&As moved to their correct location under the Stress topic for both Private and Commercial guides

CheckPrep v26.3.6 Release Notes - Improved table rendering in FAR and AIM references; columns now fill the available width with vertical dividers and centered content for easier reading - Fixed FAR tables with multi-row headers displaying misaligned or missing columns - Fixed the "More" menu panel appearing on the right edge of the screen in landscape orientation - Full-text search across all reference types from the References landing page - Tapping a search result now navigates directly to the specific section, chapter, or document - Search prompts users to download references if content is not yet available - Added new Q&As for pitot-static system, magnetic compass, and MEA chart symbols - Various stability improvements and crash prevention fixes

CheckPrep v26.3.5 Release Notes Study Results -All references in study session review cards are now tappable, including Book references (IPH, AWH, PHAK, IFH, AFH), LOIs, and InFOs that previously appeared as plain text -Fixed study session review cards so only the header row expands/collapses -Added additional Instrument ACS Q&As

CheckPrep v26.3.4 Release Notes Session Results -Study sessions now show a completion summary with your score, correct answers, and question-by-question review -Review your answers, references, and ACS codes after every session -Retry missed questions directly from the results screen ACS Review -Expanded tap targets on task cards for easier navigation -Reference links with multiple sources now render inline and are independently tappable Store -Simplified Store page with clearer package descriptions -Full FAR/AIM & Reference Library now highlighted as included for all users References -All reference content (FAR, AIM, Advisory Circulars, Handbooks, LOIs, InFOs) confirmed free for every user with no purchase required Under the Hood -Anonymous usage analytics to help us improve the study experience (no personal data collected) -Improved error handling across weather trainers, reference downloads, and study sessions -Remote configuration support for future content updates -Fixed FAR reference links that navigated to incorrect eCFR pages -Departure and Approach trainers renamed to reflect Beta status

CheckPrep v26.3.3 Release Notes References Redesign - FAR and AIM are now combined into a single References tab with a clean landing page; tap into either publication from one place. - Full native NavigationStack navigation; swipe-back with parallax and dimming works identically to the rest of the app. Navigation & Transitions - References section now uses native iOS navigation transitions throughout, including system edge-swipe gestures. - Tap-to-reset on the References and ACS Review tabs; tapping the active tab returns you to the root view. - Default tab order is now Review, Study Modes, Trainers, References. Reliability & Sync - iCloud sync now triggers in the foreground via the scenePhase handler for faster cross-device updates. - Fixed AIM reference deep-links (e.g., "AIM 1-1-17(b)(1)(c)(2)") navigating to the incorrect sub-paragraph. - Eliminated several force-unwrap crash risks in AIM HTML parsing and the approach database. Cleanup - Typo fixes. - Removed Export Progress feature entirely. - Normalized question data consistency across all ACS study content.

CheckPrep v26.3.2 Release Notes iCloud Sync - Study sessions, bookmarks, and preferences now sync across your iPhone and iPad via iCloud - Settings and theme changes push to your other devices automatically FAR/AIM Improvements - FAR and AIM now download automatically in the background on first launch - AIM update notifications now appear on launch, matching FAR behavior - Fixed garbled text appearing at the bottom of some AIM pages Stability & Reliability - Fixed a crash risk in FAR regulation parsing - Study session saves now report errors instead of failing silently Privacy & Legal - Updated privacy policy to reflect iCloud sync and all network activity

CheckPrep v26.3.1 Release Notes New Instrument ACS Q&As: -Added 19 new knowledge questions across the Instrument Rating ACS. AIM Section Titles Updated: -Fixed section titles across 5 chapters to match the current FAA AIM. Dynamic AIM Structure: -AIM chapter and section titles now automatically update from the FAA when data is downloaded or refreshed. Hardcoded defaults serve as fallback when offline.

CheckPrep v26.3.0 Release Notes New Theme System - 6 selectable themes: Auto, Exec (light), Pop (pink/rounded), Dark, Intel (green-on-black monospaced), and Retro (arcade neon monospaced) - Auto mode switches between Exec (light) and dark based on system appearance - Themes control colors, font design (default, rounded, or monospaced), and all UI elements app-wide AIM Figures & Images - Figure titles now display as centered headers inside image frames, with the figure number as a footer - Figure images show their proper FIG number instead of raw filenames - Fixed a parsing issue where carriage return characters in FAA HTML prevented figure titles from being captured AIM Tables - Tables associated with figures now display the figure title and figure number inside the table frame, matching the image layout - Fixed column overlap issue in table rendering - Tables support horizontal scrolling for wide content AIM Content Layout - Images and tables now align with their parent paragraph's text level, properly reflecting the document's outline hierarchy - Fixed indentation where images and tables snapped to the root margin after empty lines AIM Offline Support - AIM content auto-downloads on first launch - Figure images are downloaded and stored locally for offline access - Improved image download reliability with proper HTTP headers and error handling - Graceful fallback when locally cached images are unavailable FAR Tables - Fixed merged/concatenated words in FAR table cells ACS - Updated ACS question content

AIM Section (New) - Full Aeronautical Information Manual browser with all 11 chapters, section picker, and paragraph-level content with proper markers (a., b., c., 1., 2., 3.) - Full-text search across the entire AIM, matching the FAR search experience - AIM bookmarking with hierarchical references (e.g., AIM 5-4-3(b)(1)(a)) - AIM chapter downloads with progress indicators, checkmarks, and retry on failure - AIM references in ACS Review Q&As are now hyperlinked and open directly to the relevant section - Last AIM Amendment date and Last AIM Verification date displayed on the downloads page - Store updated to reflect combined "Electronic FAR/AIM" access FAR Section - Added Part 21 (Certification of Products & Parts) and Part 39 (Airworthiness Directives) to the FAR browser and downloads - Fixed subsection (i) being incorrectly indented as a Roman numeral when it follows (h) with sub-paragraphs; affects display across all FAR sections - FAR regulation downloads now run up to 6 at a time instead of one-by-one, significantly reducing total download time - Retry option added for any failed FAR or AIM downloads ACS Review Content - Added FAR references to 13 Q&As across Pilot Qualifications, Airworthiness Requirements, and Airworthiness Directives topics - Removed 1 inaccurate Q&A (weight change for W&B) - FAR citations now consistently use "FAR" prefix and are hyperlinked to the corresponding regulation section - Added 7 new checkride oral Q&As covering preflight procedures: pilot health assessment (IMSAFE), aircraft airworthiness responsibility, preflight action requirements, passenger safety briefings, checklist usage, and navigation data currency - Corrected FAR 61.1(b) citation to FAR 61.31(e) for complex aircraft endorsement - Removed Favorite star from ACS guides list - ACS code no longer shows ".Q1" or ".Q2" suffix on session detail cards Study History - Tapping a question in quiz or flashcard session history now expands to show the ACS code, question, reference, and full answer - FAR and AIM references in expanded cards are hyperlinked Themes - AIM and FAR card colors now update correctly when switching themes - Pop theme now uses rounded fonts (SF Rounded) throughout the app - Retro theme now uses monospaced fonts (SF Mono) throughout the app - Intel theme applies green tint to the status bar - Exec theme uses a refined, uniform color palette on the FAR section - Weather display (QuickWX) now respects your chosen theme's font style - Renamed "Girlie Pop" theme to "Pop" Accessibility - VoiceOver: Improved progress bar announcements in study sessions; flashcards now support "Flip card" action; game timer reads as spoken time ("2 minutes 30 seconds") - Voice Control: All major buttons across study modes, games, and tab bar now respond to spoken labels - Larger Text: Fonts now scale with Dynamic Type (11pt minimum floor); tab bar, flashcards, and clearance game adapt layout at large text sizes - Differentiate Without Color: ACS category badges show icons alongside color when the system setting is enabled - Sufficient Contrast: Replaced low-contrast muted text throughout with accessible color across all themes - Captions: Clearance game shows a live transcript when Closed Captioning is enabled in system settings UI & Polish - Full row is now tappable for expanding/collapsing Knowledge, Risk Management, and Skills sections - Slimmed down the tab bar to match standard iOS app height - "More" menu overlay now fades in smoothly instead of sliding in with the panel - Removed "FULL TEXT" label from FAR and AIM content pages for a cleaner look - Improved search bar layout on content pages - Session detail cards now expand with a smooth animation - AIM chapter buttons sized to match FAR section for visual consistency Stability - Resolved potential edge-case crashes in the Clearance Game and app startup - Updated deprecated iOS APIs across the app - Zero build warnings