Service difficulty report · Support · Boeing 7377H4

Difficulty date
May 13, 2021
Submitted
May 17, 2021
Operation
Air carrier
Aircraft
N222WN
Make and model
Boeing 7377H4
Aircraft serial
34290
Aircraft time
52,415 hours, 31,247 cycles
Part
Support
Condition
Corroded
Location
Bs 500d
Stage of operation
NR
How discovered
9
Nature of condition
O
Precautionary procedure
O

As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.

What was found

CORROSION ON FORWARD CARGO BAY AFT BULKHEAD CENTER PANEL LOWER SUPPORT AT B.S. 500D; R.B.L. 25; W.L. 154. REMOVED CORROSION IAW SRM 51-10-02-0G-0, ORIGINAL THICKNESS WAS 0.071 IAW SRM 53-30-08-0I-0 IDENTIFICATION 1. MAX. MAT. LOSS, L=1.5'XW=1.5'XD=0.004' REMAINING THICKNESS 0.067' FOUND TO BE WITHIN LIMITS. REWORKED AREA IAW SRM 53-30-08-1A-1 ALLOWABLE DAMAGE 1. APPLIED CHEMICAL CONVERSION COATING, PRIMER & ENAMEL IAW SRM 51-20-01, SOPM 20-41-02 ON REWORKED AREA.

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