SDR ASAA2015070412510

Service difficulty report · Transition Panel · Boeing 737890

Difficulty date: July 4, 2015
Submitted: July 22, 2015
Operation: Air carrier
Aircraft: N520AS
Make and model: Boeing 737890
Aircraft serial: 36481
Aircraft time: 24,265 hours, 7,763 cycles
System (JASC): 5320 · Fuselage Miscellaneous Structure
Part: Transition Panel
Part number: 146A750233
Condition: Corroded
Location: Bs 727-727d
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

AFT PIT LT TRANSITION PANEL HAS DOUBLE DRILLED HOLE BETWEEN BS 727C AND 727D. ACFT GROUNDED. LEFT TRANSITION PANEL HAD DOUBLE DRILLED HOLE AT STA 727G+10 AND CORROSION AT 727D, ORIGINAL MATERIAL = .040, REMOVED=.007, REMAINING=.033 BOTH FOUND OUT OF LIMITS IAW SRM 53-00-53-1A-2, R & R TRANSITION PANEL FROM BS 727 TO 727D-10 IAW SRM 53-00-53-2R-5, PO 840918.7, DOT REMOVED.