Service difficulty report · Web · Boeing 7378H4

Difficulty date
May 28, 2023
Submitted
June 27, 2023
Operation
Air carrier
Aircraft
N8536Z
Make and model
Boeing 7378H4
Aircraft serial
63571
Aircraft time
20,012 hours, 9,739 cycles
Part
Web
Part number
UNKNOWN
Condition
Corroded
Location
Zn 100 Fus Lower
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

AFT CARGO DOOR CUTOUT THRESHOLD WEB CORRODED AT FASTENER HOLES RBL 27 @ STA. 795-847<[01] REMOVED CORROSION AFT CARGO DOOR CUTOUT THRESHOLD WEB AT FASTENER HOLES RBL 27 @ STA. 795-847. MAX MATERIAL LOSS IS 0.010? MAX ALLOWED IS 0.005?. MATERIAL REMAINING IS 0.040?. FOUND TO BE OUT OF LIMITS PER SRM 53-60-15-1A-1;[02] REMOVED AFT CARGO THRESHOLD WEB PER SRM 51-40-02;[03] LOCATED; DRILLED AND COUNTERSINK NEW AFT CARGO THRESHOLD WEB. ALL WORK PER SRM 51-40-05 AND 51-40-08.;[04] OK TO INSTALL.;[05] INSTALLED NEW THRESHOLD WEB PER SRM 51-40-02;[06] INSPECTION C/W.;[07] UPDATED MEASUREMENT LINE 14 WITH -25 FOR FULL PART NUMBER

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