SDR DALA1036759855

Service difficulty report · Floorbeam · Doug DC951

Difficulty date: December 28, 2010
Submitted: December 29, 2010
Operation: Air carrier
Aircraft: N764NC
Make and model: Doug DC951
Aircraft serial: 47717
Aircraft time: 77,185 hours, 77,042 cycles
Engine: Pwa JT8D9
System (JASC): 5315 · Fuselage Main, Floor Beam
Part: Floorbeam
Condition: Cracked
Location: Bs 753
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

DURING M-CHECK, FOUND MAIN CABIN FLOOR SUPPORT WEB AT BS 753 RBL 40 IS CRACKED AT UPPER RIVET. HFEC INSP IAW NDT SPM 06-10-01.001 VERIFIED CRACK CONTAINED BY FASTENER HOLE. FABRICATED REPAIR DOUBLER IAW SRM 53-01, FIG 2 AND SRM 53-13-3, FIG 1. INSTALLED DOUBLER IAW SRM 53-01, FIG 2 AND SRM 51-30-5, PG 12 PAR 7B.

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