Service difficulty report · Housing · Boeing 737752

Difficulty date
August 15, 2023
Submitted
September 13, 2023
Operation
Air carrier
Aircraft
N7886A
Make and model
Boeing 737752
Aircraft serial
35122
Aircraft time
52,212 hours, 27,316 cycles
Part
Housing
Part number
UNKNOWN
Condition
Cracked
Location
Zn 200 Fus Top
Stage of operation
IN
How discovered
9
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

APU COMPESSOR SCROLL HOUSING HAS INTERSECTING CRACKS NEAR THE EXIT DUCT.<[01] FOUND TO BE OUT OF LIMITS PER AMM 49-11-00 PART REPLACEMENT REQUIRED PER AMM 49-11-00 STEP 2 E. (F) 1);[02] UPDATED MEASUREMENTS VERIFIED;[03] VERIFIED FOUND TO BE OUT OF LIMITS PER AMM 49-11-00 PART REPLACEMENT REQUIRED PER AMM 49-11-00 STEP 2 E. (F) 1) UPDATED MEASUREMENTS VERIFIED;[04] REMOVAL AND REPLACEMENT OF APU DOCUMENTED ON TASK CARD 749-11-01; ID# TTG8Q00MV159.;[05] VERIFIED;[06] CORRECTION STEP 4. REMOVAL AND REPLACEMENT OF APU DOCUMENTED ON TASK CARD 749-11-01; ID# TTG8Q00J0080;[07] VERIFIED CORRECTIVE ACTION STEP 4. VERIFIED MEASUREMENT TABLE AND TASK CARD COMPLETE.