Service difficulty report · Doubler · Boeing 7377H4

Difficulty date
February 26, 2024
Submitted
March 15, 2024
Operation
Air carrier
Aircraft
N947WN
Make and model
Boeing 7377H4
Aircraft serial
36924
Aircraft time
44,562 hours, 27,179 cycles
Part
Doubler
Part number
NOTREPORTED
Condition
Cracked
Location
Horizontal Stab
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

CRACK FOUND AT LT HORIZONTAL STABILIZER LOWER SKIN STA 193.90; APPROX 17' FROM L/E; I/B ROW; CRACK LENGTH 1'. CRACK FOUND AT LT HORIZONTAL STABILIZER LOWER SKIN STA 193.90 APPROX 17' FROM L/E I/B ROW CRACK LENGTH 1'.<[01] TREATED AND PRIMED REPAIR PARTS; LOWER SKIN AREA; AND TRIMMED AREA PER REF AMM 51-21-41-370-802 AND AMM 51-21-72-370-804;[02] COMPLETED SME INSPECTION OF WORKMANSHIP AND PAPERWORK AUDIT.;[03] INSTALLED REPAIR DOUBLER AND FILLER PER REF. SRM 55-10-01-2R-11 REPAIR 11 AND FILLET SEAL AROUND THE EDGES OF THE DOUBLER PER REF SRM 51-20-05-0G-0; THIS IS CATEGORY B REPAIR; INSPECTION THRESHOLD AT 56;000 TOTAL FLIGHT CYCLES AND INTERVAL 9;000 FLIGHT CYCLES;[04] VERIFIED STEPS 1;2 AND 3;[05] JOB IS COMPLETE

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