Service difficulty report · Support · Boeing 7377H4

Difficulty date
November 15, 2021
Submitted
December 6, 2021
Operation
Air carrier
Aircraft
N914WN
Make and model
Boeing 7377H4
Aircraft serial
36622
Aircraft time
45,576 hours, 27,409 cycles
Part
Support
Condition
Corroded
Location
Fuselage
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

CORROSION ON ACB LH FLOOR-TO-SIDEWALL SUPPORT; BS 727B+6'; BS 727B+10' AND BS 727B+14'; LBL 22 (ALL MARKED) ; / [01] REMOVED CORROSION ON ACB FLOOR TO SIDEWALL SUPPORT; BS727B+6'; BS 727B+10' AND BS 727B+14'; LBL22. MEASURES BS 727B+14': L=0.700'; W=0.500'; D=0.010'. ORIGINAL THICKNESS 0.040'; MATERIAL LOSS 0.010'; REMAINING THICKNESS 0.030'. THE SIDEWALL SUPPORT IS OUT OF LIMITS.IAW. SRM 53-00-53-1A-2; ALLOWABLE DAMAGE 2; STEP 4.(2); TOOL USED: DEPTH GAGE ID:ATS1225; DUE DATE07/2022.; [02] CORRECTION P/N 146A7502-29; [03] VERIFIED CORROSION REMOVAL ON ACB LH F-T-S SUPPORT FOUND TO BE OUT OF LIMITS PER SRM 53-00-53-1A-2; [04] THIS DISCREPANCY WILL ACCOMPLISHED ON CARD TTG8Q009BFVR.

More about the Boeing 737-7H4