SDR ASAA2022070139241

Service difficulty report · Intercostal · Boeing 737890

Difficulty date: July 1, 2022
Submitted: July 29, 2022
Operation: Air carrier
Aircraft: N562AS
Make and model: Boeing 737890
Aircraft serial: 35091
Aircraft time: 58,050 hours, 17,117 cycles
System (JASC): 5320 · Fuselage Miscellaneous Structure
Part: Intercostal
Part number: 147A56603
Condition: Corroded
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 FLOOR AT STA 947 TO STA 967, LBL25, INTERCASTAL HAS CORROSION AT FASTENER HOLE.DOT: N090 GROUNDED - YES. REMOVED CORROSION FROM INTERCOSTAL @ STA967 TO ST967 LBL 25. ORIGINAL THICKNESS .090", REMAINING .075 LOSS OF .015 FOUND OUT OF LIMITS IAW B737 SRM 53-70-51. REMOVED INTERCOSTAL @ STA947 TO STA967 LBL25. INSTALLED NEW INTERCOSTAL @ STA947 TO STA967 LBL25. PART # 147A5660U3 LOT# 3059101. IAW B737-800 PER DWG # 147A5650.DOT N090 REMOVED.