Service difficulty report · Spar · Lkheed SP2H

Difficulty date
January 27, 2012
Submitted
February 1, 2012
Operation
General aviation
Aircraft
N4235N
Make and model
Lkheed SP2H
Aircraft serial
144681
Aircraft time
11,626 hours, 5,754 cycles
System (JASC)
5711 · Wing Spar
Part
Spar
Condition
Broken
Location
Zone 500
Part time
11,626 hours, 719 cycles
Stage of operation
IN
How discovered
E
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

AT WING STATION 40, LT SIDE, A CRACK JUST OTBD OF THE FUSELAGE SKIN APPROX 20-24 INCHES LONG WAS DISCOVERED DURING PSE EDDY CURRENT INSPECTION. THE BREAK STARTS AT THE FRONT SPAR NR 22 RUNNING AFT ALONG WITH THE NEXT STRINGER NR 21 AFT OF THE SPAR, WHICH HAD NOT COMPLETELY SEVERED. THE FORWARD SPAR WEB IS ALSO CRACKED FROM THE TOP OF THE SPAR RUNNING UPWARDS AND EVENTUALLY DISAPPEARING BEHIND AN EXISTING DOUBLER APPROX 18 INCHES IN LENGTH.