Final approach path vertical path angle affected by temperature and elevation.

A0608/24

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Approach Procedures

2024-11-06 07:00 - 2025-02-03 23:59

Period of Applicability

2024-11-06 07:00 - 2025-02-03 23:59

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Interpretation

Pilots are reminded that the final approach path vertical path angle (VPA) based on baro VNAV is affected by temperature and elevation, especially during cold temperatures where the aircraft's vertical path can be lower than expected.

Message

PILOTS ARE REMINDED THAT THE FINAL APCH PATH VERTICAL PATH ANGLE (VPA) BASED ON BARO VNAV IS AFFECTED BY TEMPERATURE AND AD ELEV. DURING COLD TEMPERATURES, THE ACFT S VERTICTAL PATH CAN BE LOWER THAN...

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Raw NOTAM

A0608/24 NOTAMR A0418/24
Q) OOMM/QPIXX/IV/NBO/A/000/999/2336N05817E005
A) OOMS B) 2411060700 C) 2502032359 EST
E) PILOTS ARE REMINDED THAT THE FINAL APCH PATH VERTICAL PATH ANGLE
(VPA) BASED ON BARO VNAV IS AFFECTED BY TEMPERATURE AND AD ELEV.

DURING COLD TEMPERATURES, THE ACFT S VERTICTAL PATH CAN BE LOWER THAN
THE PUBLISHED VPA AND DURING HIGH TEMPERATURES THE ACFT S VERTICAL
PATH CAN BE HIGHER THAN THE PUBLISHED VPA.

DURING HIGH TEMPERATURES RANGING FROM 35 DEG CELSIUS TO 50 DEG
CELSIUS THE EFFECTIVE VPA WILL BE HIGHER (3.2 TO 3.4 DEG) COMPARED
TO THE PUBLISHED VPA (3.0 DEG) WHICH COULD POTENTIALLY CREATE
DIFFICULTIES FOR ENERGY MANAGEMENT ON FINAL APCH AND LEAD TO A
SLIGHTLY HIGH OR HIGH INDICATION ON THE PAPI (3.0 DEG).