SDR IPXA2025071670051

Service difficulty report · Unknown · Boeing 75724APF

Difficulty date: July 11, 2025
Submitted: July 16, 2025
Operation: Air carrier
Aircraft: N434UP
Make and model: Boeing 75724APF
Aircraft serial: 25465
Aircraft time: 32,503 hours, 21,828 cycles
System (JASC): 5300 · Fuselage Structure (General)
Part: Unknown
Condition: Noise
Location: Zone 200
Stage of operation: CL
How discovered: O
Nature of condition: E
Precautionary procedure: O

As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.

What was found

LOUD NOISE SHORTLY AFTER LIFT OFF STARTED AT A LOW FREQUENCY THEN SLOWLY INCREASED IN PITCH, SOUNDED LIKE AN ENGINE SLOWLY REVING TO REDLINE. NOISE ENDED AT 5000Â€™. SUSPECT CREW ENTRY DOOR SEAL PRESSURIZED AIRCRAFT PER MM 21-30-00, NO LEAKS OR KOOKY NOISES NOTED.

More about the Boeing 757-24APF