Service difficulty report · Web · Boeing 7377H4

Difficulty date
August 26, 2021
Submitted
September 13, 2021
Operation
Air carrier
Aircraft
N966WN
Make and model
Boeing 7377H4
Aircraft serial
36966
Aircraft time
32,714 hours, 19,999 cycles
Part
Web
Part number
146A812325
Condition
Corroded
Location
Aft Cargo Thrshl
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

ACB DOOR SURROUND; SUB THRESHOLD WEB CORROSION. BS827+1; RBL27; WL153 ; / [01] REMOVED CORROSION ON AFT CARGO BAY SUB THRESHOLD WEB AT BS 827+1' RBL 27 WL 153 <BR>MEASURED L 1' X W 1' AND 0.003' DEEP. ORIGINAL THICKNESS .050'; REMAINING THICKNESS .047' <BR>FOUND TO BE IN LIMITS IAW SRM 53-60-15-1A-1 ALLOWABLE DAMAGE 1 - AFT CARGO DOOR SURROUND STRUCTURE <BR>TO BE REPAIRED BY REPLACEMENT DUE TO SURROUNDING CORROSION DAMAGE; ON CUSTOMER CARD TTG8Q006A439 <BR><BR>DEPTH GAUGE ATS 2473 S/N UNKNOWN 07/2022; [02] VERIFIED REMOVED CORROSION ON AFT CARGO BAY SUB THRESHOLD WEB AT BS 827+1' RBL 27 WL 153 <BR>MEASURED L 1' X W 1' AND 0.003' DEEP. ORIGINAL THICKNESS .050'; REMAINING THICKNESS .047' <BR>FOUND TO BE IN LIMITS IAW SRM 53-60-15-1A-1 ALLOWABLE DAMAGE 1 - AFT CARGO DOOR SURROUND STRUCTURE <BR>TO BE REPAIRED BY REPLACEMENT DUE TO SURROUNDING CORROSION DAMAGE; ON CUSTOMER CARD TTG8Q006A439.

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