Service difficulty report · Flap · Boeing 7377H4

Difficulty date
May 17, 2023
Submitted
June 21, 2023
Operation
Air carrier
Aircraft
N429WN
Make and model
Boeing 7377H4
Aircraft serial
33658
Aircraft time
66,602 hours, 39,316 cycles
Part
Flap
Part number
UNKNOWN
Condition
Delaminated
Location
Zn 500 Left Wing
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

LT WING O/B AFT FLAP HAS AREA OF DELAMINATION ON UPPER SURFACE NEAR I/B AFT CORNER.<[01] IDENTIFIED AFT FLAP IAW SRM 57-53-01-0I-4; FIG 2; TABLE 2; ITEM 2.<BR><BR>DAMAGE IS BEYOND ALLOWABLE DAMAGE LIMITS IAW SRM 57-53-01-1A-4 PARA 4.A (5).<BR><BR>DAMAGE IS REPAIRABLE IAW SRM 51-70-10-2R-4 AS DIRECTED BY SRM 57-53-01-2R-4 PARA 3.B.<BR><BR>STARTED DAMAGE REMOVAL OF UPPER SKIN (APPROX 10' X 10') IAW SRM 51-70-10-2R-4 PARA 3.A.;[02] FLAP ASSEMBLY WILL BE REMOVED AND REINSTALLED ON TTG8Q00L4LDF.;[03] UPDATED PARTS REQUIREMENT;[04] /LT WING O/B AFT FLAP WAS REPLACED AND WILL BE REMOVED AND INSTALLED ON THE AIRCRAFT ON FAULT TTG8Q00L4LDF.;[05] VERIFIED CORRECTIVE ACTION STEPS 1-4. TASK CARD COMPLETE.

More about the Boeing 737-7H4