Service difficulty report · Web · Boeing 7377H4

Difficulty date
July 22, 2022
Submitted
August 22, 2022
Operation
Air carrier
Aircraft
N490WN
Make and model
Boeing 7377H4
Aircraft serial
32476
Aircraft time
59,880 hours, 35,571 cycles
Part
Web
Condition
Corroded
Location
Aft Cabin
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 WEB AT AFT CABIN BS989 RBL37. / [01] CORROSION ON WEB AT AFT CABIN BS989 RBL37 WL 208 P/N 147A5744-14 WITH NEXT DIMENSION L=0.950'' W=0.800 X= 0.010 OT=0.050 RT=0.040 WITH NEXT TOOL DEPTH GAGE ID:ATS2678 S/N:UNKNOWN DATE:04/2022 DUE:04/2023; FOUND TO BE OUT LIMITS DUE TO NO ALLOWABLE DAMAGE IN SRM; IT WILL BE REPAIRABLE BY REPLACEMENT I.A.W SRM 51-10-02-0G PAR 9C;[02] VERIFIED CORRECTIVE ACTION 1 COMPLETED AND VERIFIED OUT OF LIMITS;[03] REMOVED WEB AT BS 989 TO 1016 RBL 11 WL 208 PER SRM 51-10-02.-;[04] RECIVED NEW WEB ITEM 147A5744-14 LOT 1485868 LOCATED AND DRILLED NEW WEB AT RBL 37 BS 989 TO 1016 WL 208.1 ; IAW 737-700 SRM 51-40-05-0G-0 DWG 147A5730.- OK TO INSTALL.-;[05] VERIFIED CORRECTIVE ACTION STEP 4. VERIFIED OK TO INSTALL.;[06] INSTALLED NEW WEB AT AFT CABIN BS 986 TO BS 1016 RBL 37 IAW SRM 51-40-02-0G-0 ADN DWG 147A5730 REV:C; CARD IS COMPLETED;[07] UPDATED PART USED;[08] VERIFIED CORRECTIVE ACTION #6 AND MEASUREMENT FIELD;[09] VERIFIED CORRECTIVE ACTION #6 AND MEASUREMENT FIELD

More about the Boeing 737-7H4