Emergency Power Lever - P-330

CHAPTER EIGHT

T-34C CONTACT CHG 2

808.

EMERGENCY POWER LEVER

Description. N/A

General. The manual fuel control system consists of a cockpit control, which provides

the pilot with direct mechanical linkage to the bellows and the fuel metering pin in the FCU.

The manual fuel system is a backup system only and is used in the event of a malfunction in

the pneumatic section of the FCU. When engaged, the system will bypass all pneumatic

failure modes that result in minimum fuel flow and/or lack of engine response to PCL

movement. Movement of the EPL towards max mechanically depresses the bellows to

schedule more fuel to the engine. This system relies on torque tube pretension to reduce power

as the EPL is moved towards the idle range. When using the EPL, normal operation of the

landing gear warning system is provided. If loss of power occurs due to a malfunction of the

FCU, power may be restored using the EPL. No automatic fuel scheduling is incorporated, and

fuel metered to the engine is a direct function of the lever position. Idle RPM, when required,

should be maintained above 65% by the pilot to eliminate the lack of EPL response in the idle

range, and improve engine response. The manual fuel control system bypasses the protective

devices, relying on pneumatic bleed air as the operational parameter for the fuel topping

function of the primary governor. Failure of the FCU at high power cannot be corrected with

the EPL.

NOTE

With gear up, normal operation of the gear warning system occurs

when the PCL and the EPL are retarded below 75% N1.

Additionally, the warning system will activate (with gear up) when

both the PCL and EPL are forward of the 75% switch.

Procedures

EPL Activation

Condition lever - full increase.

ii.

EPL - Out of detent; slowly advance to desired power setting.

iii.

PCL - Idle.

EPL Normal Use. Utilize smoothly in the same manner as the PCL with

considerations/limitations as set forth under GENERAL above. The use of the EPL

will only be practiced at altitude. It will NOT be used for training purposes in

either the normal or emergency landing patterns.

CAUTION

1. Compressor stall, vibrations and overtemp are probable with

rapid accelerations of the EPL, particularly at the low end of the

power spectrum.

8-20 EMERGENCY PROCEDURES