Service difficulty report · Support · Boeing 737790

Difficulty date
October 27, 2016
Submitted
November 21, 2016
Operation
Air carrier
Aircraft
N618AS
Make and model
Boeing 737790
Aircraft serial
30543
Aircraft time
54,835 hours, 24,781 cycles
Part
Support
Part number
147A85407
Condition
Corroded
Location
Fuselage
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

MAIN CABIN L2 DOOR CUTOUT LOWER AREA SILL SUPPORT HAS CORROSION BETWEEN BS 947 AND BS 987 LBL 47. GROUNDED - YES. FOUND CORROSION TO BE BEYOND THE SRM LIMITS REPAIRS. FOUND OUT OF LIMITS IAW SRM 53-70-15 AND 57-10-02, REMOVED Z ANGLE SUPPORT AND ADJACENT ANGLES IAW SRM 57-40-02, RECEIVED NEW ANGLE SUPPORT, POSITIONED DRILLED AND DEBURRED NEW CHORD / SILL SUPPORT , INSTALLED CHORD AND SILL SUPPORT IAW DWG 147A8501 REV 0 AND DWG 147A0060 REV 0 CIC AREA UNDER CHORD IAW AMM 51-21-91, ORIGINAL MAT. WAS 0.080 MAT LOSS 100% ON LOWER CHORD AT STA BS947 AND BS987 LBL 47.