SDR HNAA2014012000017

Service difficulty report · Beta Lockout · Dhav DHC8102

Difficulty date: January 20, 2014
Submitted: January 20, 2014
Operation: Air carrier
Aircraft: N837EX
Make and model: Dhav DHC8102
Aircraft serial: 217
Aircraft time: 53,839 hours, 61,103 cycles
System (JASC): 6120 · Propeller Controlling System
Part: Beta Lockout
Condition: Failed
Location: Nr 1 Engine
Stage of operation: CR
How discovered: O
Nature of condition: J
Precautionary procedure: O

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

What was found

AT 3,000 FT, BETA LOCKOUT FAILURE ON NR 1 ENGINE. COMPLIED WITH NON EMERGENCY CHECK LIST AND CONTINUED FLIGHT. AT 1500 FT, NR 1 ENGINE TORQUE INCREASED TO 110 PERCENT, RETARD PROP TO 900 WITH NO EFFECT. TORQUE THEN FLUCTUATED BETWEEN 25 AND 125 PERCENT. NO CAUTION LIGHT OR ADVISORY LIGHT. ACFT ENROUTE FOR ENGINE REMOVAL.