SDR FDEA201607032248

Service difficulty report · Unknown · Boeing 75721B

Difficulty date: July 3, 2016
Submitted: July 5, 2016
Operation: Air carrier
Aircraft: N933FD
Make and model: Boeing 75721B
Aircraft serial: 24330
Aircraft time: 58,661 hours, 34,279 cycles
System (JASC): 2120 · Air Distribution System
Part: Unknown
Condition: Odor
Stage of operation: DE
How discovered: O
Nature of condition: B
Precautionary procedure: K

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

What was found

DURING DESCENT THRU 11,000' AND LEVELING OFF AT 10,000' AND POWERING UP, AIR CONDITIONING PACKS CYCLED AND A FUME EVENT OCCURRED. DIRTY SOCK ODOR UNTIL ENGINE SHUTDOWN. T/S BOTH PACKS IAW MM 21-00-00-2 & 21-00-01. NO FAULTS NOTED, COULD NOT DUPLICATE DISCREPANCIES. OK FOR SERVICE.

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