Service difficulty report · Clamp · Saab SF340A

Difficulty date
November 9, 2021
Submitted
November 10, 2021
Operation
Air carrier
Aircraft
N901BC
Make and model
Saab SF340A
Aircraft serial
340A088
Aircraft time
46,181 hours, 54,535 cycles
Engine
Ge CT75A2
Engine time
35,511 hours, 36,051 cycles
Propeller
Rotol R3894123F26
Part
Clamp
Part number
12J63125
Condition
Cracked
Stage of operation
TO
How discovered
O
Nature of condition
O, J
Precautionary procedure
E, A

As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.

What was found

DURING TO/O ROLL @ V1, PLANE DISPLAYED HIGH TEMP + LOW PROP OIL PRESSURE IN #2 ENG PROP RPM DROPPED, ENGINE SHUTDOWN. COMPLIED W/QRH, RETURNED TO LAND AT MYNN. ON INVESTIGATION FOUND THAT THE HP BLEED LINE V-BAND CLAMP FAILED P/N 12J63-125 AT THE RETAINER SEGMENT WHICH CAUSED THE HP BLEED LINE TO OPEN UP AND ALLOW BLEED AIR LOSS TO CAUSE THE SHUTDOWN OF THE ENGINE.

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