B737 Maintenance Mastermind

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