Service difficulty report · Probe · Beech 99

Difficulty date
April 13, 2007
Submitted
May 1, 2007
Operation
General aviation
Make and model
Beech 99
Aircraft time
47,770 hours
Engine
Pwa PT6A28
Propeller
Hartzl HCB3TN3
Part
Probe
Part number
3034389
Condition
Cracked
Location
Engine T5
Stage of operation
IN
How discovered
9
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

(CAN) 7 OUT OF 8 T5 INDICATION PROBES WERE FOUND WITH LOOSE OR BROKEN TERMINALS AND MISSING CERAMIC INSULATION. THE PROBES APPEAR TO QUITE FRAGILE IN COMPARISON TO THE OEM PART. THE PARTS IN QUESTION ARE PMA PARTS, THEIR PN 26584. PROBES REPLACED AND AIRCRAFT RETURNED TO SERVICE (TC NR 20070416002)

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