Service difficulty report · Web · Boeing 73779P

Difficulty date
January 7, 2021
Submitted
July 16, 2021
Operation
Air carrier
Aircraft
N7855A
Make and model
Boeing 73779P
Aircraft serial
29357
Aircraft time
47,310 hours, 30,926 cycles
Part
Web
Condition
Corroded
Location
Bs 440-490
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 SUBTHRESHOLD WEB AT FWD CARGO BAY BS440 - BS490 RBL28 WL156. / REMOVED CORROSION ON SUB THRESHOLD WEB AT FCB BS 440 - BS 490 RBL 28 WL 156 IAW SRM 53-30-15-1A-1. APPLIED ALODINE AND PRIMER PER SOPM 20-50-14. DIMENSIONS FOR REPAIRS WERE BS 455.5 - 0.5' X 0.75' X 0.0002'; BS 460 - 461 0.5' X 0.6' X 0.0001' BS 470 - 471 1.5' X 1.5' X 0.0002'.

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