Service difficulty report · Bleed Air Sys · Boeing 7378

Difficulty date
May 28, 2025
Submitted
June 2, 2025
Operation
Air carrier
Aircraft
N8725L
Make and model
Boeing 7378
Aircraft serial
42575
Aircraft time
14,733 hours, 6,789 cycles
Part
Bleed Air Sys
Condition
Fumes
Location
Apu
Stage of operation
TX
How discovered
O
Nature of condition
O
Precautionary procedure
K

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

What was found

SMELL IN COCKPIT WHEN APU BLEED TURNED ON <[01]. PERFORMED CONDITIONAL INSPECTION PER AMM 05-51-56 THAT LED TO FIM TASK 21-00-00 REMOVED GROUND EQUIPMENT; DRAINED OVER SERVICED HYD. RUN BOTH MOTORS PER FIM NO ORDER DETECTED WITNESSED BY THREE AMT`S AND OP`S SUB E1971. SUSPECT HEAVY RUBBER SMELL COMING FROM BRAND NEW JET WAY.; [02] PERFORMED CONDITIONAL INSPECTION PER AMM 05-51-56 THAT LED TO FIM TASK 21-00-00-810-830; REMOVED GROUND EQUIPMENT; DRAINED OVER SERVICED HYD. RUN BOTH MOTORS PER FIM NO ORDER DETECTED WITNESSED BY THREE AMT`S AND OP`S SUB E1971. SUSPECT HEAVY RUBBER SMELL COMING FROM BRAND NEW JET WAY.; [03] CORRECTING SIGN OFF TO MATCH LOG PAGE CORRECTIVE ACTION.

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