Service difficulty report · Splice · Boeing 7377H4

Difficulty date
May 25, 2021
Submitted
June 28, 2021
Operation
Air carrier
Aircraft
N207WN
Make and model
Boeing 7377H4
Aircraft serial
34012
Aircraft time
52,378 hours, 31,227 cycles
Part
Splice
Condition
Corroded
Location
Bs 1016 Lbl 2
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 CHORD SPLICE AT AREA AFT OF AFT CARGO BAY BS1016 LBL2 WL188. ; / [01] VERIFIED APPLICABILITY OF SRM 53-80-08-01-1 FOR IDENTIFICATION AND SRM 53-80-08-1A-1 FOR ALLOWABLE LIMIT<BR>REMOVED CORROSION FROM CHORD SPLICE ANGLE BS 1016 LBL 2 WL 188 IN AREA OF 3' X1.5' ORIGINAL MATERIAL THICKNESS 0.080' IAW SRM 51-10-02-0G-0; [02] VERIFIED APPLICABILITY OF SRM 53-80-08-01-1 FOR IDENTIFICATION AND SRM 53-80-08-1A-1 FOR ALLOWABLE LIMIT; [03] VERIFIED REMOVAL OF CORROSION FROM CHORD SPLICE ANGLE BS 1016 LBL 2 WL 188 IN AREA OF 3' X1.5' ORIGINAL MATERIAL THICKNESS 0.080' IAW SRM 51-10-02-0G-0; [04] REQUEST NDI FOR REMAINING MATERIAL THICKNESS ON REWORKED AREA OF CHORD SPLICE ANGLE BS 1016 LBL 2 WL 188 ORIGINAL MATERIAL THICKNESS 0.080'; [05] UT THICKNESS TESTED BLENDED AREA PER 737NDT PART 4 51-00-00 PROCEDURE 2. LOWEST REMAINING THICKNESS IS .070'.;

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