Service difficulty report · Beam · Boeing 7377H4

Difficulty date
July 13, 2021
Submitted
August 2, 2021
Operation
Air carrier
Aircraft
N962WN
Make and model
Boeing 7377H4
Aircraft serial
36963
Aircraft time
33,006 hours, 20,057 cycles
Part
Beam
Condition
Corroded
Location
Bs 270
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 FLIGHT DECK LATERAL BEAM BS 270; RBL 2.5; WL 208 (MARKED) ; / [01] REMOVED CORROSION IN A 1.5' X 0.6' AREA; MAX DEPTH .008' PER SRM 53-10-51-1A-1;FOUND TO BE OUT OF LIMITS PER SRM 53-10-51-1A-1.; [02] REMOVED NUTPLATE AT BS 270; RBL 2.5; WL 208 PER SRM 53-10-51-1A-1; HFEC INSPECTED BLENDED AREA AND OPEN (NUTPLATE) HOLE PER 737NDT PART 6 51-00-00 PROCEDURES 23 AND 16. NO CRACKS FOUND. CAL ID IS000450 S/N N500D000M120071; [05] REMOVED PANEL 211AF PER SOPM 20-50-01.; [06] INSTALLED EWIS AND FOD PROTECTION IN REPAIR AREA PER AMM 20-60-07-913-801.; [07] VERIFIED - EWIS AND FOD PROTECTION IN REPAIR AREA PER AMM 20-60-07-913-801.; [08] REMOVED FASTENERS IN REPAIR AREA AT BS 270; WL 208; FROM LBL 11 TO RBL 11 PER SRM 51-40-02-0G-0.; [09] VERIFIED FASTENERS REMOVED BS 270; WL 208; FROM LBL 11 TO RBL 11 PER SRM 51-40-02-0G-0.; [10] ALL PARTS MADE FROM .063' 7075T6-CLAD LOT# 1418646-2 PER EA# 21-153-02012-WIP2;

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