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SDR ASAA2018113027143

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Service difficulty report · Intercostal · Boeing 737790

FAA SDR system

Difficulty date
November 12, 2018
Submitted
November 30, 2018
Operation
Air carrier
Aircraft
N618AS
Make and model
Boeing 737790
Aircraft serial
30543
Aircraft time
59,712 hours, 28,038 cycles
System (JASC)
5320 · Fuselage Miscellaneous Structure
Part
Intercostal
Part number
148A226115
Condition
Corroded
Location
Bs 1028-1032
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, AFT WET AREA, AFT PRESSURE BULKHEAD LOWER INTERCOSTAL AT STA 1028-STA 1032, LBL 17-LBL 27, WL 210 UPPER SURFACE CORRODED. GROUNDED - YES. EVALUATED INTERCOSTAL ON THE AFT PRESSURE BULKHEAD AT STA 1028-STA 1032, LBL 17-LBL 27, FOUND TO BE OUT OF LIMITS IAW B737-700 SRM 53-80-1A-1 FIG 103, DETAIL D. REMOVED AND REPLACED INTERCOSTAL, PART # 148A2261-15 IAW B737-700 SRM 51-40-02 AND BOEING DRAWING 148A0922 REV-SHEET 11-12. DOT X078 REMOVED.