Service difficulty report · Hmu · Dorner DO328100

Difficulty date
November 29, 1999
Submitted
March 26, 2000
Operation
Air carrier
Aircraft
N438JS
Make and model
Dorner DO328100
Aircraft serial
3056
Engine
Pwa PW119B
Propeller
Hartzl HDE6C3B
Part
Hmu
Part number
311703603
Condition
Failed
Location
Rt Engine
Part time
7,880 hours
Stage of operation
TO
Nature of condition
R, J
Precautionary procedure
C

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

What was found

DURING TAKEOFF, THE RIGHT HAND ENGINE WOULD ONLY PRODUCE 86 PERCENT TORQUE. THE AIRCRAFT RETURNED TO THE FIELD WITHOUT FURTHER INCIDENT. THE AIRCRAFT WAS FERRIED TO PIT WHERE MAINTENANCE INSPECTED AND REPLACED THE HYDRO MECHANICAL UNIT IN ACCORDANCE WITH DORNIER MAINTENANCE MANUAL 73-22-00. OPERATIONAL CHECKS WERE PERFORMED AND THE AIRCRAFT WAS RELEASED FOR SERVICE.