
Free
About
This app is not approved for operational or flight use. For training and reference purposes only.
Airspeed Unreliable — Boeing 737 QRH Companion
When airspeed indications become unreliable, quick and accurate reference is essential. This app provides Boeing 737 NG and MAX pilots with verified QRH pitch and N1 settings for many aircraft configuration — instantly and offline.
Supported Variants
• 737-800 NG Winglet
• 737-800 SFP / SFP2
• 737 MAX AB / AOA
Key Features
• QRH-based data
• Interpolation engine: Calculates intermediate weight and altitude values automatically
• Variant selection: Switch easily between NG and MAX models
• Offline access: No internet required during flight operations
• Clean interface: Optimized for quick input and clear output in all cockpit conditions
Disclaimer
This application is provided for training and reference purposes only.
It is not an official Boeing product and not approved for operational use in any phase of flight. Always refer to your company’s procedures and the aircraft’s official QRH for operational decisions.
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What's New in IAS Unreliable
1.0
November 11, 2025



