DQ-131

Question 1

How many engine bleed-air ports are there, and what do they supply bleed air to?

Answer 1

Two bleed-air ports are incorporated on the engine.
Outboard port supplies bleed-air to the engine air inlet anti-icing system.

Inboard port ties into the pressurized air system.
Air from this port is supplied to the cabin heating system and can be supplied to the other engine for crossbleed starts.

Question 2

With both engines operating (100% RPM R) and the engine anti-ice switches OFF, when would the #1 ENG ANTI-ICE ON and/or #2 ENG ANTI-ICE ON appear?

Answer 2

1 ENG ANTI-ICE ON or #2 ENG ANTI-ICE ON Advisory light appears;

• With low loading (reduced collective) - with less than range 88-92% NG speed (OAT depending).
• Electrical failure (loss of AC pwr) - the valve reverts to the anti-icing mode and activates an advisory indicating #1 ENG ANTI-ICE ON or #2 ENG ANTI-ICE ON.

Question 3

How does use of the cockpit heater or OptionaI heater affect maximum torque available and fuel flow?

Answer 3

Cockpit/gunner heater on - About 20 lbs/hr - 4% TRQ.

Cockpit/gunner heater and Option II cabin heater system on - About 28 lbs/hr - 5.5% TRQ.

NOTE - Option II cabin heater system shuts off when anti-ice is turned on. Power to the heater returns when the anti-ice is turned off.

Fuel Flow. Fuel flow scales are provided opposite the torque scales. On any chart, torque may be converted directly to fuel flow without regard to other chart informa- tion. Data shown in this section is for two-engine opera- tion. For one-engine fuel flow, refer to paragraph 7.18 or Section VIII FUEL FLOW.

(1) With bleed-air extracted, fuel flow increases:
(a) Engine anti-ice on - About 60 lbs/hr. Example: (760 lbs/hr + 60 lbs/hr = 820 lbs/hr).
(b) Cockpit/gunner heater on - About 20 lbs/hr.
(c) Cockpit/gunner heater and Option II cabin heater system on - About 28 lbs/hr.

NOTE - Option II cabin heater system shuts off when anti-ice is turned on. Power to the heater returns when the anti-ice is turned off.

(d) Anti-ice and cockpit/gunner heater on - About 80 lbs/hr.

Question 4

How is the cockpit heater turned on and to maximize heat should the vent blower be turned on?

Additionally, the OPTION II Cabin Heater system requires engine anti-ice to be on for operation and double hearing protection – True or False?

Answer 4

-10 2.60.3 Normal Operation.

1. APU or engine - Start (refer to paragraph 8.19 or 8.20).
2. AIR SOURCE HEAT/START switch - As required. ENG if engine is operating; OFF for heat from external air source.
3. HEATER ON/OFF switch - ON.
4. VENT BLOWER switch - OFF for maximum heat.
5. HEATER control - As desired.

False - Option II Cabin Heater will turn OFF when anti-ice is ON.
Double hearing is required when operatin heater.

Question 5

Given the following cruise conditions what is the Cruise Torque (DE) and Continuous Torque Available and explain how is it calculated?

TEMP 40 Degrees
PA 2000’
Cruise Airspeed 120 KIAS
ACFT GWT 20000 LBS

Answer 5

Cruise TRQ (DE) is 65% (-10 pg. 7A-55):
Find Cruise page with clean config, 40*C & 2K` PA.
Intercept line 120 KIAS / 20K LBS,
Go down and read TRQ (up for F.F.)

Continuous TRQ Available is 86% TRQ:
Assuming ATF of 1.0 (using low ETF).
Intercept ACFT GWT (20k LBS) and MCP
(adjusting for/ using low ETF) -
Go down and read DE MCP TRQ

Question 6

Not announcing that the aircraft is drifting left is a failure of which crew coordination principle and objective?

Answer 6

Principle: Provide situational aircraft control, obstacle avoidance, and mission advisories.

Objective: Exchange mission information

(Cross-monitor performance is the other objective for this principle, but does not apply to the situation)