B737 Maintenance Mastermind
Tool for Boeing 737 NG & MAX
Free · In‑App Purchases · Designed for iPad. Not verified for macOS.
Boeing 737 NG and MAX maintenance reference: BITE guides, MEL and CDL, circuit breakers, access panels, STA map, panel drawings and a UTC MEL calculator.
B737 Maintenance Mastermind is an independent quick-reference and utility app designed to support aircraft technicians, engineers, mechanics, and aviation professionals working with Boeing 737 NG and MAX
aircraft.
The B737MM app combines fast offline tools with secure premium reference modules, helping users quickly find maintenance-related information, calculations, references, and troubleshooting guidance during
study, training, planning, or daily technical routines.
FREE TOOLS
• MEL Calculator
Quick helper for standard dispatch time limit calculations.
• Unit Converter
Fast conversion of common aviation units, including pressure, temperature, volume, weight, and fuel-related values.
• Fuel Calculator
Useful fuel uplift and density calculation tool for quick planning and cross-checking.
• Abbreviations Dictionary
Large searchable glossary of aviation, maintenance, and technical abbreviations.
PREMIUM REFERENCE MODULES
• Alerts
Searchable cockpit alert, status, and message references with related technical context.
• Flags
Reference guide for PFD, ND, FMC/CDU, and display flags.
• BITE
Built-In Test Equipment reference module with test access information and related troubleshooting links.
• MEL Reference
Fast searchable Minimum Equipment List reference support for NG/MAX style workflows.
• CDL Reference
Configuration Deviation List reference module for missing or deferred aircraft configuration items.
• Circuit Breakers / CB
ATA-grouped circuit breaker reference with panel-related information.
• Lights
Cockpit, annunciator, and system light reference module with related system context.
• Location
Aircraft component, access panel, service panel, antenna, and equipment location references.
• STA Map
Station, frame, stringer, waterline, and aircraft location reference helper for quick orientation.
• Visual Panels
Interactive visual reference for cockpit panels and related light/panel locations.
• Support & Materials
Technical support notes, fastener/material references, practical troubleshooting notes, and maintenance helper information.
PREMIUM ACCESS
Premium reference modules open with an auto-renewable yearly subscription (with a 3-day free trial for eligible users) or a one-time lifetime purchase, both offered in the app.
Payment is charged to your Apple Account at confirmation of purchase. The subscription renews automatically unless it is cancelled at least 24 hours before the end of the current period, and your account is
charged for renewal within 24 hours before the end of the current period. You can manage or cancel your subscription in your Apple Account settings at any time after purchase. Use Restore Purchases in the app
to restore access on a new device.
Some premium content requires internet access for first download, access verification, or content updates. Once downloaded, content is available on the device for fast access.
IMPORTANT DISCLAIMER
This application is an independent reference and training support tool. It is not official Boeing documentation and is not affiliated with, endorsed by, sponsored by, or associated with The Boeing Company, any
airline, aircraft operator, maintenance organization, or aviation authority.
The information in this app is provided for educational, training, and general reference purposes only. The official Aircraft Maintenance Manual (AMM), Fault Isolation Manual (FIM), Illustrated Parts Catalog
(IPC), Wiring Diagram Manual (WDM), Structural Repair Manual (SRM), and the operator-approved MEL/CDL are the only official sources and must always take precedence.
Do not use this application as the sole source for aircraft maintenance actions, dispatch release decisions, operational decisions, or work on an actual aircraft.
Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Privacy Policy: https://b737mm.com/privacy/
Ratings & Reviews
- This app hasn’t received enough ratings or reviews to display an overview.
Location records now show their place on the aircraft drawing, with a link that opens the same spot on the STA Map. STA Map objects and taps match the reference data. Small fixes.
The developer, Nemanja Dimitrijevic, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Not Collected
The developer does not collect any data from this app.
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- Nemanja Dimitrijevic
- Size
- 10.6 MB
- Category
- Utilities
- Compatibility
Requires iOS 18.0 or later.
- iPhone
Requires iOS 18.0 or later. - iPad
Requires iPadOS 18.0 or later. - Mac
Requires macOS 15.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 2.0 or later.
- iPhone
- Languages
- English
- Age Rating
4+
- 4+
- In-App Purchases
Yes
- Premium Lifetime $17.00
- Premium Yearly $8.99
- Copyright
- © "2026 C Club"