
UnReliable IAS
UnReliable AirSpeed - Boeing
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About
UnReliable IAS is a quick-reference tool for the Boeing 777 and 787 "Flight With Unreliable Airspeed" non-normal procedure.
Enter aircraft type, weight, and flight level to get the pitch, thrust, and speed targets for each phase of flight: Climb, Cruise, Descent, Holding, Terminal Area, Final Approach, and Go-Around.
Supports:
- 777-300ER and 777F
- 787-9 and 787-10
Also includes the Immediate Action items as a fast, always-available reference on the flight deck.
Settings let you choose the fleet shown (777 or 787) and set the maximum takeoff weight for each type; the weight keypad then accepts values only up to that limit.
All values are drawn from and computed on the manufacturer's QRH tables (B777 QRH Rev-66, B787 QRH Rev-25). Where the QRH publishes no data, the app shows Out of Envelope.
This app is a quick reference only. It is not approved for operational use and is not a substitute for your company's manuals or the manufacturer's QRH.
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What's New in UnReliable IAS
1.3
October 15, 2026
- The screen stays on while the app is open. - Your entries are kept when you leave the app and come back. - The summary sheet is now titled Immediate Action. - iPad: a full-width keypad in portrait. - Refinements to the main page, Settings and About. A quick reference only — not a substitute for the manufacturer's or your company's manuals.
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