Service difficulty report · A/C Pack · Boeing 7878

Difficulty date
August 22, 2025
Submitted
August 26, 2025
Operation
Air carrier
Aircraft
N26902
Make and model
Boeing 7878
Aircraft serial
34822
Aircraft time
49,364 hours, 6,146 cycles
Part
A/C Pack
Condition
Failed
Location
Right
Stage of operation
CR
How discovered
O
Nature of condition
O
Precautionary procedure
A

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

What was found

PACK R ADVISORY PACK IS FAILED OR MANUALLY SHUT DOWN. FIM TASK REF : 21-50-F2-E0A-421A-A CMC MSG# 2165174 FLIGHT STATUS: L INTERMITTENCE CODE: M PH: CRUISE NARRATIVE: RIGHT PACK CONTROL UNIT CHANNEL 1 R/H PACK BAY OPENED, FOUND MISSING CLAMP AND DUCT JOINT OPEN, BLOWING HOT AIR. SEE PICTURES OUTLET SPOOL DUCT COUPLING FOUND DETACHED, PART OF THE COMPRESSOR OUTLET DUCT FOR R1 & R2 DOWNSTREAM TO OZONE CONVERTER. NEW PACKING ATTACHED TO DUCTING, SLEEVE AND COUPLING ATTACHED I.A.W AMM 21-51-08. R PACK OPERATION CHECK CARRIED OUT AND LEAK CHECKED STATIFACTORY. CABIN AIR CONDITIONING/TEMP CONTROL SYSTEM TEST AIR ON CARRIED OUT PASSED I.A.W FIM DMC-B787-A-21-50-F1-90A-421A-A. AIRCRAFT RETURNED TO NORMAL.

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