Service difficulty report · Web · Boeing 7377H4

Difficulty date
September 26, 2022
Submitted
November 9, 2022
Operation
Air carrier
Aircraft
N201LV
Make and model
Boeing 7377H4
Aircraft serial
29854
Aircraft time
59,586 hours, 35,374 cycles
Part
Web
Condition
Corroded
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

CORROSION ON 1016 WEB AT AFT PASSENGER CABIN BS1016+12 RBL5. MARKED. / [01] SRM 53-70-51-0I-1 IDENTIFICATION 1 AND SRM 53-70-51-1A-1 ALLOWABLE DAMAGE 1 ARE APPLICABLE TO A/C N201LV.<BR> REMOVED CORROSION ON UPPER SURFACE IAW SRM 51-10-02-0G-0 . <BR>REMOVED (2EA.) RIVETS ON REWORKED AREA IAW SRM 51-40-02-0G-0.<BR>MEASURE IS : L= 2.' X W=1.8' X D=0.002' ORIG. THICKNESS IS 0.040' PER DWG# 147A5744. P/N 147A5744-16<BR> REMAINING THICKNESS IS 0.038' FOUND TO BE WITHIN LIMITS REWORKED AREA IAW SRM 53-70-51-1A-1 ALLOWABLE DAMAGE 1 PARAG.4.C.(2)(A) DETAIL E.<BR>USED TOOL: ID : ATS 167<BR> S/N: 65093024<BR> DUE DATE: 01/2023.<BR>OK TO TREAT AND PRIME.;[02] VERIFIED CORRECTIVE ACTION STEP 1.;[03] APPLIED CHEMICAL CONVERSION COATING AND TWO LAYERS OF BMS 10-11; TYPE I; PRIMER TO THE REWORKED AREAS IAW SRM 51-20-01-0G-0 ; SOPM 20-41-02.;[04] REJECTION - FASTENERS REMOVED IN CORRECTIVE ACTION ITEM 1 HAVE NOT BEEN REPLACED.;[05] REINSTALLED (2EA.) FASTENERS LOCATED AT BS 1016+12 RBL 5 IAW SRM 51-40-02-0G- AND DWG# 147A5730 REV:C.;[06] RII VERIFIED CORRECTIVE ACTION ITEM 5.;[07] VERIFIED CORRECTIVE ACTION ITEM 3-5; AND MEASUREMENT FIELDS; CARD COMPLETE.

More about the Boeing 737-7H4