SDR IPXA2021012764978

Service difficulty report · Retainer · Boeing 76734AF

Difficulty date: January 26, 2021
Submitted: January 29, 2021
Operation: Air carrier
Aircraft: N339UP
Make and model: Boeing 76734AF
Aircraft serial: 37859
Aircraft time: 27,125 hours, 9,442 cycles
System (JASC): 5311 · Fuselage Main, Frame
Part: Retainer
Condition: Damaged
Location: Main Cabin Door
Stage of operation: CL
How discovered: 9
Nature of condition: O
Precautionary procedure: O

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

What was found

INSPECTION TYPE: N/A CLIMBING THRU 17000FT A VERY LOUD POP WAS HEARD, FOLLOWED BY LOUD HISSING SOUND COMING FROM THE BOTTOM OF MAIN CABIN DOOR. CABIN ALT REMAINED STEADY, FOUND SEAL OUT OF RETAINER. REINSTALLED SEAL AT BOTTOM OF MAIN CABIN DOOR, IAW AMM 52-09-01-424-019.

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