Service difficulty report · Angle · Boeing 7377H4

Difficulty date
August 17, 2021
Submitted
September 15, 2021
Operation
Air carrier
Aircraft
N903WN
Make and model
Boeing 7377H4
Aircraft serial
32457
Aircraft time
45,600 hours, 27,306 cycles
Part
Angle
Condition
Corroded
Location
Bs 747-767
Stage of operation
IN
How discovered
V
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

AFT CARGO- L/H TRANSITION ANGLE HAS CORROSION AROUND THE FASTENER HOLES FROM STA 747+15 TO767+12 ; / [01] REMOVED CORROSION; FOUND SEVERAL AREAS OF MATERIAL LOSS BEYOND LIMITS; [02] REMOVED TRANSITION ANGLE; [03] FABRICATED NEW TRANSITION ANGLE PER SRM 53-00-51; [04] VERIFIED FABRICATION; [05] ALODINE NEW TRANSITION ANGLE IAW AMM 51-21-41 AND APPLIED<BR>BMS10-79 PRIMER IAW AMM 51-21-72.; [06] VERIFIED ALODINE AND PRIMER.; [07] INSTALLED BONDING NUTPLATES PER SRM 51-40-10 TO NEW FABRICATED PART .NUTPLATES INSLALLED AT 0200 8/25/2021; [08] VERIFIED INSTALLED BONDING NUTPLATES PER SRM 51-40-10 TO NEW FABRICATED PART .NUTPLATES INSLALLED AT 0200 8/25/2021; [09] REMOVED AND REPLACED TRANSITION ANGLE PER SRM 51-40-02. NEW ANGLE INSTALLATION ON ROUTINE CARD 5360-E-16462-NG (FLOOR STRUCTURE CORROSION PROTECTION) TG8Q004DKZM. ANGLE PN 146A7502-29.<BR>CHECK INDIVIDUAL SIGN OFFS.

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