SDR IPXA2026032798418

Service difficulty report · A/C Pack · Boeing 75724APF

Difficulty date: March 27, 2026
Submitted: March 27, 2026
Operation: Air carrier
Aircraft: N404UP
Make and model: Boeing 75724APF
Aircraft serial: 23726
Aircraft time: 39,791 hours, 27,112 cycles
System (JASC): 2150 · Cabin Cooling System
Part: A/C Pack
Condition: Odor
Stage of operation: IN
How discovered: V
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

EXHAUST SMELL COMING FROM PACKS RAN APU FOR AN HOUR WITH PACKS IN HOT AND THEN COLD, NO SMELLS NOTED, RAN EACH ENGINE AT IDLE WITH NO SMELLS NOTED, RAN EACH ENGINE AT TAKE-OFF POWER SETTINGS WITH PACKS IN HOT AND COLD TEMP SETTINGS, NO ABNORMAL SMELL WAS NOTED AT ANY PARAMETER. OK FOR SERVICE REF MM 21-00-01/301.

More about the Boeing 757-24APF