Aerodata Flight Deck Performance Validity
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Aerodata Flight Deck Performance Validity
Hello,
I am wondering if any Aerodata FDP users can tell me if their operation imposes limits on FDP validity. For example, if a new ATIS is issued with a 3 degree increase in temperature, or a calm wind changes to a 5 knot tailwind, is a new ACARS FDP required by procedure?
The TLR (pre-filled paper performance solution that is generated hours ahead of time) does have listed validity limits: OAT must be less than or equal to planned assumed temperature and equal to or greater than planned OAT minus 10 degrees C; altimeter setting must be equal to or greater than planned altimter setting - 00.10" HG or 3.4 HPA. Additionally weight must be no greater than planned weight and no less than planned -180,000 lbs (for my operator/airframe).
However no such restriction exists on the ACARS FDP that I can find. Is FDP validity left to crew judgement at most operators, or are limits imposed? Are the TLR validity requirements equally applicable to the FDP? Thanks in advance.
I am wondering if any Aerodata FDP users can tell me if their operation imposes limits on FDP validity. For example, if a new ATIS is issued with a 3 degree increase in temperature, or a calm wind changes to a 5 knot tailwind, is a new ACARS FDP required by procedure?
The TLR (pre-filled paper performance solution that is generated hours ahead of time) does have listed validity limits: OAT must be less than or equal to planned assumed temperature and equal to or greater than planned OAT minus 10 degrees C; altimeter setting must be equal to or greater than planned altimter setting - 00.10" HG or 3.4 HPA. Additionally weight must be no greater than planned weight and no less than planned -180,000 lbs (for my operator/airframe).
However no such restriction exists on the ACARS FDP that I can find. Is FDP validity left to crew judgement at most operators, or are limits imposed? Are the TLR validity requirements equally applicable to the FDP? Thanks in advance.
