SDR 7AHR20121119003

Service difficulty report · Floorbeam · Doug DC983

Difficulty date: November 19, 2012
Submitted: November 19, 2012
Operation: General aviation
Aircraft: N120MN
Make and model: Doug DC983
Aircraft serial: 53120
Aircraft time: 40,084 hours, 41,076 cycles
System (JASC): 5315 · Fuselage Main, Floor Beam
Part: Floorbeam
Condition: Corroded
Location: Bs 1338
Part time: 40,084 hours, 41,076 cycles
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

BS 1338 FLOORBEAM HAS LIGHT CORROSION ON UPPER SURFACE AND ROUND FASTENER HOLES AT LBL 24 TO LBL 60 AND EXFOLIATION CORROSION BETWEEN PREVIOUS REPAIR AT LBL 60. BLENDED OUT CORROSION FOUND LEVEL OF CORROSION TO BE OUT OF LIMITS IAW SRM 53-01, FIG 1, SHEET 3. FABRICATED REPAIR PARTS IAW SRM 51-70-5, PG 6-12. INSTALLED ALL REPAIR PARTS IAW SRM 51-10-3 AND 51-30-5, PG 12.

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