Service difficulty report · Line · Dhav DHC8102

Difficulty date
February 27, 2004
Submitted
April 1, 2004
Operation
General aviation
Make and model
Dhav DHC8102
Aircraft time
34,206 hours
Engine
Pwa PW120A
Propeller
Hamstd 14SF7
Part
Line
Part number
3034384
Condition
Out Of Position
Location
P3 Sense
Component
Control Rod
Component part number
87620097023
Stage of operation
NR
How discovered
O
Nature of condition
E
Precautionary procedure
O

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

What was found

(CAN) THE SHOP ENGINEER WAS TAKING STOCK OF ENGINE WHEN HE NOTICED THAT THE PCU CONTROL ROD (CONDITION) P/N 87620097-023,POWER PLANT BUILD IPC REF 71-00-02 FIG 10ITEM 2 WAS CONTACTING THE P3 AIR PRESSURE SENSING LINE P/N 3034384 (PW) IPC 72-01-30 FIG 1 ITEM 10 BEFORE CONTACTING THE HMU STOP AT MAX SETTING.THIS OCCURS WHEN THE HMU IS REPLACED AND THE T FITTING P/N MS9196-04 IS NOT POSITIONED PROPERLY AND OVERLOOKED WHEN RIGGING IS DONE.THE OFFENDING PART IPC REF 72-01-40 FIG 1 ITEM 120 WAS REPOSITIONED SO A GAP BETWEEN THE SENSE LINE AND THE CONTROL ROD WAS SUFFICIENT FOR FULL AND NORMAL MOVEMENT OF THE HMU CONTROL ROD. THE MECHANISM WAS FUNCTIONED WITH NO REOCCURRENCE OF THE PROBLEM ON THE ENGINE IN QUESTION.