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Contents

B737-200 Adv Study Notes by Anton Jordaan.

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*** Updated 16 Sep 2016 ***

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MANUAL START

 

An engine with an inoperative starter valve, may be started by operating the valve manually. When this procedure is to be used, review the items listed and coordinate, the procedure closely with the ground personnel.

 

Use normal start procedures with the following additions:

 

Direct ground crewman to open the starter valve when “Start Engine No ……..” is announced.

 

Direct ground crewman to release starter valve override when “Release” is announced.

 

Engine Start Switch ………………….… GRD

    

Captain announces over interphone and to flight crew, “START ENGINE No …..”.

 

Inform ground crewman when N2 is rotating.

 

Normal Start Procedures ……… OBSERVE

 

When N2 RPM indicates 35%, Captain announces over interphone, “RELEASE”.

 

Engine Start Switch ………………….… OFF

 

Check the start switch moves to OFF and duct pressure increases to the pre-start value.

 

 

 

STARTING AT HIGH AIRPORT ELEVATION

 

During engine start at very high attitude airports, if an engine will not accelerate to idle and fails to respond to Thrust Lever movement; shut down the engine by placing the start Lever to CUTOFF, and continue motoring the engine until fuel is purged from the aft section (observe Starter Limitations).    

 

Set the Thrust Lever approximately one inch forward of the closed position and restart the engine.

Normal engine start and acceleration should result.

Do not reduce to idle.

Maintain rpm slightly above idle.

 

Minimum duct pressure for start may be reduced by 0.5 psi per 1000 feet above sea Level.

 

ELEVATION ft

DUCT PRESS

   SL

30.00

  500

29.75

1,000

29.50

1,500

29.25

2,000

29.00

2,500

28.75

3,000

28.50

3,500

28.25

4,000

28.00

4,500

27.75

5,000

27.50

5,500

27.25

6,000

27.00

 


BATTERY START

 

(With APU Bleed or Ground Air Available)

 

Prior to a battery start, accomplish the Exterior Safety Inspection and the Cockpit Safety Inspection.

Accomplish Interior/Exterior Inspections if required except for items requiring electrical or hydraulic power.

Accomplish the following Preliminary Cockpit Preparation items:

Overheat Detection ………………… CHECK
Fire Warning ………………………… CHECK
Extinguisher Test Switch ………...… CHECK

 

APU (pneumatic source if

available) ……………………………... START

 

Flap lever ………………………………… SET

 

  • Position the Flap lever to agree with the Flap Position Indicator.

Emergency Equipment ……..……… CHECK

Circuit Breakers …………………..… CHECK
Flight Recorder ……………………….… SET
Rain Repellent ……………………… CHECK
Crash Axe ……………………….… STOWED
On the Captain’s command, the First

Officer reads and the Captain

accomplishes the following items:

 

Oxygen & Interphone ……………… CHECK

 

Standby Power Switch ………………… BAT

 

  • Selecting BAT will power the standby bus and provide No 1 radio communication for start-up clearance.

 

Galley Power Switch …………………… ON

 

Emergency Exit lights Switch …..… ARMED

No Smoking & Fasten

Belts Switches …………………… AUTO/ON

 

Hydraulic Pump Switches ……………… ON

 

  • The system A engine driven hydraulic pumps wilt operate as soon as N2 begins to rotate. The system B AC powered hydraulic pumps will operate as soon as the generators are on the busses.

 

Air Conditioning &

Pressurization ……………………… 1 PACK,
BLEEDS ON, SET

 

Parking Brake …………………………… SET

 

Note:     The wheels should be chocked in case the brake pressure has bled down.

 

 

Cleared for Start

Air Conditioning Pack Switch ………..… OFF
Anti-collision light Switch …………..…… ON

Engine Start
Engine No. 2 Start ……….… ACCOMPLISH

 

  • Only the self-generating and standby bus powered engine instruments will be operative (N1, N2 and EGT).

 

  • If APU air is being used, starter-cutout may be confirmed by observing a positive drop in APU EGT. The START VALVE OPEN light then extinguishes.

 

Generator No 2 Switch ………………… ON
Engine instruments ………………… CHECK


BATTERY START (continued)

Engine No 1 start …………… ACCOMPLISH
Generator No 1 Switch ……..…………… ON

 

After Start

 

Complete the Preliminary Cockpit Preparation by checking the following items:

 

Mach Airspeed Warning

Test Switches ……..………………… PRESS

 

Stall Warning Test Switches …….…… TEST

Passenger Oxygen Switch ………. NORMAL
Crew Oxygen ……..…………….…… CHECK

 

  • Accomplish a panel scan to insure that the Cockpit Preparation Procedure is complete.

 

After Start Checklist ………... ACCOMPLISH

 

The airplane is now ready for taxi.

Refer to the normal checklist for the Before Takeoff and subsequent checks.

 

 

 

ENGINE CROSSBLEED START

 

Prior to using this procedure, ensure that the area to the rear of the aircraft is clear.

 

Increase thrust on the operating engine until there is a minimum of 30 psi Duct Pressure and use this air source to start the remaining engine.

Engine Bleed Air Switches ……..……… ON
APU Bleed Air Switch ……..…………… OFF
Air Conditioning Pack Switches …….… OFF
Isolation Valve Switch ……..………… AUTO

  • Ensures pneumatic air supply for engine start.

 

Engine Thrust lever (Operating

Engine) …… ADVANCE THRUST

LEVER UNTIL PNEUMATIC DUCT PRESSURE INDICATES 30 PSIG

 

Non-Operating Engine ……..……… START

 

  • Use normal start procedures with cross-bleed air.
  • After starter cutout, reduce thrust.

ABNORMAL ENGINE STARTS

MANUAL ENGINE START (B737 Ops Manual Vol 1 page 02.21.03)

 

Coordinate procedure closely with Ground Personnel.

Use normal start procedures with the following additions:

 

  • Direct Ground Crewman to open the starter valve when “Start Engine No….” is announced.
  • Direct Ground Crewman to release the starter valve when “Release” is announced.
  • Engine Start Switch ……………………………………   GRD
  • Captain announces over interphone:………………...   “Start Engine No ……”
  • Captain announces over interphone:……..….………   “N2 rotation”
  • Normal start procedures ………………………………    Observe
  • @ 35% N2, Captain announces over interphone:…..    “Release”
  • Engine Start Switch ……………………….…………..    OFF
  • Check Start Switch moves to OFF and Duct Pressure recovers.

 

 

HUNG START (B737 Ops Manual Vol 1 page 02.21.03)

 

Normally associated with starting at airport with high elevation.

If engine fails to accelerate to idle:

  • Move Thrust Lever slightly forward and check for response.
  • If no response:
    • Start Lever …………………………… CUTOFF
    • Motor engine ………………………… Until fuel is purged from the aft section
    • Observe starter limitations
    • Thrust Lever …………………………. Set 1 inch fwd of closed position
    • Engine ………………………………... Restart
    • Normal engine start and acceleration should result.
    • Do not reduce to idle.
    • Minimum Duct pressure ……………. Reduce by ½ psi per 1,000 feet above MSL.

 

 

ELEVATION ft

DUCT PRESS

ELEVATION ft

DUCT PRESS

   SL

30.00

3,500

28.25

  500

29.75

4,000

28.00

1,000

29.50

4,500

27.75

1,500

29.25

5,000

27.50

2,000

29.00

5,500

27.25

2,500

28.75

6,000

27.00

3,000

28.50

6,500

26.75

 

 

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