SDR ASAA2018020923622

Service difficulty report · Transition Panel · Boeing 737990ER

Difficulty date: February 9, 2018
Submitted: February 21, 2018
Operation: Air carrier
Aircraft: N469AS
Make and model: Boeing 737990ER
Aircraft serial: 41702
Aircraft time: 14,132 hours, 4,696 cycles
System (JASC): 5320 · Fuselage Miscellaneous Structure
Part: Transition Panel
Part number: 146A750253
Condition: Corroded
Location: Bs 727i-787
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

TRANSITION CHANNEL HAS SEVERAL SPOTS OF CORROSION BETWEEN BS 727I+8 - 787, RBL 21 AND 2 PUNCTURES AT BS 737, RBL 21. ACFT GROUNDED. REMOVED CORROSION BETWEEN BS 727I+8 - 737, FOUND OUT OF LIMITS IAW SRM 53-00-53, FIG 103, DETAIL D. REMOVED THE CHANNEL IAW SRM 53-00-53-2R-5. FABRICATED A REPAIR IAW SRM 53-00-53-2R-5, INSTALLED THE REPAIR IAW SRM 53-00-53-2R-5, DWG 146D7500, REV-.