SDR DALA2016042003151

Service difficulty report · Intercostal · Boeing 75726D

Difficulty date: April 17, 2016
Submitted: April 21, 2016
Operation: Air carrier
Aircraft: N762BC
Make and model: Boeing 75726D
Aircraft serial: 33966
Aircraft time: 28,319 hours, 16,502 cycles
System (JASC): 5320 · Fuselage Miscellaneous Structure
Part: Intercostal
Condition: Corroded
Location: Bs 1520-1540
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

CORROSION ON AFT CARGO BILGE INTERCOSTAL ON BOTH SIDES OF WEBAND ON LOWER FLANGE BETWEEN BS 1520-1540, RBL-3. REMOVED AFT CARGO BILGE INTERCOSTAL ON BS 1520-1540, RBL=3 IAW SRM 51-40-02, PG 2-11, EVALUATED CORROSION ON INTERCOSTAL IS OUT OF LIMITS IAW SRM 53-00-04 ALLOWABLE DAMAGE 1, FIG 101, DETAIL II. REPLACED INTERCOSTAL IAW DWG NR 146N8900.

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