Service difficulty report · Beam · Cessna 402C

Difficulty date
October 20, 2026
Submitted
October 22, 2026
Operation
Air carrier
Aircraft
N160PB
Make and model
Cessna 402C
Aircraft serial
402C0493
Aircraft time
32,342 hours, 24,211 cycles
Part
Beam
Part number
56541097
Condition
Cracked
Location
Zone 400
Part time
32,342 hours, 24,211 cycles
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

DURING SCHEDULED ENGINE BEAM REPLACEMENT, UPON REMOVAL OF ENGINE BEAM A CRACK WAS VISUALLY IDENTIFIED ON THE INBOARD FACE OF THE ENGINE BEAM. THIS CRACK IS EMANATING FROM A FASTENER LOCATION COMMON TO THE INBOARD VERTICAL CROSS OVER BEAM UPRIGHT (OEM: 5654107-15). THIS CRACK MEASURES APPROXIMATELY 1.500 INCHES LONG AND WAS PARTIALLY HIDDEN BY THE UPRIGHT AS INSTALLED. THIS CRACK IS CONSISTENT WITH OTHER CRACKS FOUND ON RIGHT HAND INBOARD ENGINE BEAMS IN THIS AREA IN THE PAST. PLEASE NOTE THAT THIS CRACK WAS NOT LOCATED IN THE LOCATION IDENTIFIED IN AD 97-26-16 OR AD 2015-07-03. THIS BEAM HAS BEEN REPLACED USING NEW PARTS.

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