SDR ASAA2017011219529

Service difficulty report · Doubler · Boeing 737990

Difficulty date: January 12, 2017
Submitted: January 25, 2017
Operation: Air carrier
Aircraft: N317AS
Make and model: Boeing 737990
Aircraft serial: 30856
Aircraft time: 49,354 hours, 19,170 cycles
System (JASC): 5330 · Fuselage Main, Plate/Skin
Part: Doubler
Part number: 143A3233U4
Condition: Corroded
Location: Bs 500-500a
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

DOUBLER AT A DISCONTINUED ANTENNA MOUNT IN THE FORWARD CARGO BAY, CORRODED . BS 500 - BS 500A, STRINGER 27L - 27R. ACFT GROUNDED. REMOVED ANTENNA MOUNT AND BLANKING PLATE IAW B737-900 SRM 51-40-02, LOCATED & DRILLED IAW DWG 143A3230 REV -. INSTALLED DOME NUTS, 4 EA. CORNER SUPPORT ANGLES, AND NEW ANTENNA MOUNT IAW DWG 143A3230, REV -, APPLIED FILLET SEAL & FASTENER DOME SEALS IAW AMM 51-31-00-390-801.