SDR HALA2015090600203

Service difficulty report · Keelbeam · Boeing 76733A

Difficulty date: September 6, 2015
Submitted: October 1, 2015
Operation: Air carrier
Aircraft: N581HA
Make and model: Boeing 76733A
Aircraft serial: 28141
Aircraft time: 52,190 hours, 9,477 cycles
System (JASC): 5314 · Fuselage Main, Keel
Part: Keelbeam
Part number: 145T861117
Condition: Corroded
Location: Bs 960-1005
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

CORROSION AROUND PANEL FASTENER ATTACH HOLES 12 EA BS 960-1005, LT KEEL BEAM LOWER CHORD FLANGE. REMOVED CORROSION AT 12 LOCATIONS, BS 960-1005 LT KEEL BEAM LOWER CHORD FLANGE, DEEPEST AREA .066" IN AREA OF 2' X 1.5", ALL AREAS FOUND TO BE WITHIN LIMITES, IAW SRM 53-50-1A-1. REPAIRED BEAM AREA IAW 53-50-12-2R-2, REPAIR 2. REPAIRED NUT PLATE ATTACHMENT HOLES IAW ER 15-01807.

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