S-61R Pelican

The S-61R is a twin engine helicopter used for transport and search-and-rescue roles.

Contents:

1. General
2. Systems
3. Avionics
4. Limits
5. Weight and Balance
6. Normal Procedures
7. Emergency Procedures
8. Servicing
9. Mission Equipment
10. Water Operations
11. Maintenance and Diagnostics
12. SL Features
13. Appendices
14. Painting Resources

1 Weight and Balance

1.1 General

The helicopter must be flown within the weight and CG (Center of Gravity) limits as specified in this section. Failure to adhere to these limitations will result in unpredictable performance. CG is measured in inches aft of the datum plane. The datum plane is located at the forward most point at the tip of the pitot tubes.

1.2 WEIGHT AND CG LIMITS

The weight and extreme CG limits for this aircraft are:

Item	Limit
Max Gross Weight:	22,050 lb
Max Forward CG:	235 inches
Max Aft CG:	251 inches

Not withstanding the maxmimum limits shown above, the helicopter should only be operated within the weight vs CG envelope shown in .

1.3 EMPTY WEIGHT AND CG

The empty weight and CG of this aircraft are:

Item	Limit
Empty Weight:	13,341lb
Empty Aircraft CG:	240.8in
Empty Moment:	3.21 M-lb-in

1.4 CG ARM DATA

The following arm data can be used to calculate moment at each of these stations.

Item	Limit
Pilot/Co-Pilot	73 in (1.85 m)
Winch	136 in (3.46 m)
RDF Operator	145 in (3.68 m)
Hoist Operator	150 in (3.82 m)
Utility Seat #1	243 in (6.17 m)
Fuel	262 in (6.67 m)
Hook	264 in (6.72 m)
Utility Seat #2	269 in (6.83 m)
Utility Seat #3	295 in (7.50 m)
Utility Seat #4	320 in (8.12 m)
Litter/Stokes Basket	345 (8.78 m)
Ramp	458 (11.63 m)

1.5 WEIGHT AND CG CALCULATION

Total weight is calculated by adding total weight of empty aircraft, fuel, passengers and baggage. Fuel weight can be calculated assuming 7 pounds per gallon of (Jet-A) fuel. The CG is obtained by dividing total moment by total weight. Moment at each station is obtained by multiplying the arm of that station by the weight at that station. Total moment is obtained by adding moment for each station and the moment for the empty aircraft.

2 Normal Procedures

2.1 General

This section describes the procedures necessary to safely and efficiently operate your aircraft. A basic understanding of helicopter flight techniques is assumed.

2.2 Preflight Procedures

2.2.1 Exterior Checks - Right Side

1. Covers – REMOVED
2. Engine compartment (right)
1. #2 Engine – CHECK
2. Oil Level - CHECK
3. Main Rotor Blades – CHECK
4. Landing Gear – CHECK
5. Check #2 fuel filter drain – VERIFY CLEAR
6. Right transmission compartment
1. Air Bottle– 3000 psi min.
2. APU Accumulator – 3000 psi min.
3. Primary Hyd. Pump – CHECK
4. Auxiliary Hyd. Pump – CHECK
5. Utility Hyd. Pump – CHECK
6. Utility Hyd. Reservoir – CHECK LEVEL
7. #2 Fire Extinguisher – 1000 psi min.

2.2.2 Exterior Checks - Tail

1. Intermediate Gearbox
1. Check Condition
2. Check Fluid Level
3. Check Cover Secure
2. Tail Rotor Gearbox
1. Check Condition
2. Check Fluid Level
3. Check Cover Secure
3. Tail Rotor Blades – CHECK

2.2.3 Exterior Checks - Left Side

1. APU Compartment
1. APU - CHECK
2. APU Oil Level – CHECK
3. APU Fire Extinguisher – 1000 psi min.
2. Left Transmission Compartment
1. Main transmission - CHECK
2. Transmission fluid level– CHECK
3. #1 Generator – CHECK
4. #2 Generator – CHECK
5. Primary Hyd. Reservoir – CHECK LEVEL
6. Auxiliary Hyd. Reservoir – CHECK LEVEL
7. #1 Fire Extinguisher – 1000 psi min.
3. Left Engine Compartment
1. #1 Engine – CHECK
2. Oil Level – CHECK
4. Check #1 fuel filter drain – VERIFY CLEAR
5. Check all 6 fuel sumps – VERIFY CLEAR

2.2.4 Exterior Checks - Nose

1. Battery - CHECK

2.2.5 Interior Checks - Main Cabin

1. ELT - ARMED
2. Bilge Pump
1. Deploy
2. Pump to check for water
3. Stow
3. Emergency Ramp Release – CHECK UP
4. Emergency Lights – CHECK

2.3 Start Procedures

2.3.1 Before Starting Engines

1. Overhead switch panel - CHECKED
1. Position light dim switch - AS REQUIRED
2. Position light switch - AS REQUIRED
3. AFT anti-collision - AS REQUIRED
4. FWD anti-collision - AS REQUIRED
5. Fuselage lighting - AS REQUIRED
6. Anchor lights - AS REQUIRED
7. Search light - AS REQUIRED
8. Windshield anti-ice - AS REQUIRED
9. Engine anti-ice switches - OFF
10. Cabin healer vent switch - AS REQUIRED
11. Cabin healer switch - AS REQUIRED
12. Pitot heat switch - AS REQUIRED
13. Windshield wiper switch - OFF
14. Lower console red lights - AS REQUIRED
15. Landing light switch - AS REQUIRED
16. Emergency exit lights switch - ARM
17. Console light rheostats - AS REQUIRED
18. Nose gear switch - AS REQUIRED
19. Hoist master – OFF
20. Channel monitor - OFF
21. Cargo hook switch - SAFE
22. Stick trim master switch - ON
23. Monitor switch - OFF
24. Converter switches - ON
25. External power switch - OFF (ON if external power is being used)
    Note: With external power on an energized, the external power advisory light will illuminate and all AC and DC busses will be energized
26. Battery switch - ON
27. Generator switches - ON
28. Start mode switch - NORMAL
29. Fire emergency shut off selector handles IN.
30. Engine fire extinguisher switch - OFF
31. Hoist cable shear switch – OFF
32. Ignition switches – NORM
2. Engine controls – CHECKED
1. Speed selectors - Check freedom of movement, full range and closed.
2. Emergency fuel control levers - Check close position stops, freedom of movement, full range, and closed
3. APU fire detection – TEST
Hold the fire warning test switch In the No. 2 ENGINE and APU position. The fire warning light on the APU control panel should illuminate.
4. Ramp master switch – OFF
5. APU – START
1. APU fire extinguisher switch – OFF
2. APU fuel shutoff switch – NORM
3. APU function switch - RUN
1. Exhaust temperature caution light ON.
2. Low oil pressure caution light - ON.
4. APU function switch – hold in START
1. At 30% speed – APU light on
2. At 45% speed – RELEASE function switch
3. At 75% speed – Clutch engagement
6. Caution-advisory panel – CHECKED
1. Verify the following lights OFF: #1 GEN, #2 GEN, #1 CONV, #2 CONV, PRI HYD PRESS, AUX HYD PRESS, XMSN CHIP MAIN, XMSN OIL PRESS.
If any of these lights are on, shut down APU and investigate cause. If external power used, direct disconnect now and verify EXT PWR goes out.
2. Caution-advisory lights – TEST
3. Advisory light brightness – AS DESIRED
7. Hydraulic/transmission gauges – CHECKED
8. AFCS Channel Monitor – AS FOLLOWS
1. METER selector – ASE
2. Vertical gyro – PORT
3. Hardover switches – CENTERED
4. Channel switches - ON
9. Parking brake – SET
10. Nose wheel lock – AS REQUIRED
11. Alternate gear handle – IN
12. Center console – CHECKED
1. COM and NAV radius – AS DESIRED
2. Ramp – AS DESIRED
3. Ramp caution lights - CHECKED
13. Landing gear panel – CHECKED
1. Gear handle – DOWN
2. Gear warning light – TEST
3. Gear position lights – CHECKED
14. Fuel Management Panel – CHECKED
1. Fuel quantity gauges - CHECK AND TEST
2. Boost pumps – TEST AS FOLLOWS
   1. #1 FWD boost - ON then OFF
   Verify FAIL light flickers ON then goes off when turning the pump ON.
   2. Repeat for all other boost pumps
3. Crossfeed– TEST AS FOLLOWS
1. Fuel shut off valve switches - OPEN
2. #1 FWD boost - ON
3. Verify - #1 LOW PR out, #2 LOW PR lit
4. Crossfeed – ON
5. Verify – both LOW PR lights out
6. #1 FWD boost - OFF
7. #1 AFT boost - ON
8. Verify – both LOW PR lights out
9. Crossfeed – OFF
10. Verify - #1 LOW PR lit, #2 LOW PR out
11. #1 AFT boost - OFF
4. Crossfeed and Transfer - AS DESIRED
5. All boost pumps - OFF
6. Fuel shut off valve switches - OPEN
15. Engine fire detection - TEST
1. Fire Warn Test - #1 (verify master fire and #1 engine T-handle warning lights lit)
2. Repeat for #2 engine
3. Fire Warn Test - OFF
16. Rotor brake – ON
17. Flight controls – CHECKED
1. Servo switch (on collective) – BOTH
2. Verify – PRI and AUX HYD PRESS off
3. Cyclic/Pedals – CHECK FREE MOVEMENT
4. Collective – CHECK FREE MOVEMENT (low RPM warning horn should sound)
5. Servo switch (on collective) – PRI OFF
6. Verify – PRI HYD PRESS lit
7. Controls – CHECK FREE MOVEMENT
8. Servo switch (on collective) – AUX OFF
9. Verify – AUX HYD PRESS lit
10. Controls – CHECK FREE MOVEMENT
11. Servo switch (on collective) – BOTH
18. Doppler – ON
19. AFCS Power – ON

2.3.2 Engine Start

CAUTION: For engine starting with inoperative APU, refer to START WITH APU INOPERATIVE in EMERGENCY PROCEDURES section.

1. Fireguard – POSTED
2. Start Mode - NORMAL
3. No.1 Engine – START
1. Speed Selector – Verify OFF
2. Emergency Fuel Control – Verify CLOSED
3. Magnetic Compass – Note Heading
4. Starter switch – START
5. N1 – Wait until above 19%
6. Speed Selector – GRD IDLE
7. Verify – N1 at 56%, oil temp/press in green
8. Verify – Starter motor shutdown (Magnetic compass returns to original heading)
9. Boost pump – ON (#1 or #2)
4. No.2 Engine – START
1. Repeat Eng. 1 procedures
5. Area Clear – CHECK
6. Rotor – ENGAGE
1. No. 2 speed selector – Advance by 5%
2. Rotor Brake – RELEASE
3. No. 2 speed selector – Advance to 98%
7. Cyclic response – CHECK
8. APU – OFF
9. Engine/Transmission Gages – CHECKED
10. Speed Selectors – MATCH at 103%

2.4 Before Takeoff

1. Ramp Position – AS DESIRED
2. Nose Wheel Lock – UNLOCKED
3. AFCS – AS REQUIRED
4. Parking Brake – OFF (verify warn light out)
5. Heat and anti-ice – AS REQUIRED
1. Engine Anti-Ice – AS REQUIRED
2. Windshield Anti-Ice – AS REQUIRED
3. Pitot Heat – AS REQUIRED
4. Cabin Heat – AS REQUIRED
6. Lights – AS REQUIRED
1. Anti-Collision – ON
2. Hover Lights – CHECK
3. Position Lights – ON FOR NIGHT FLIGHT
7. Flight Instruments – CHECKED
8. Engine No. 1 – CHECK
1. Collective – FULL DOWN
2. No. 2 Speed Selector – IDLE
3. No. 1 Speed Selector – FULL
Note max N2
4. No. 1 Speed Selector – IDLE
Verify rotor freewheeling
9. Engine No. 2 – CHECK
1. Collective – FULL DOWN
2. No. 1 Speed Selector – IDLE
3. No. 2 Speed Selector – FULL
Note max N2
4. No. 2 Speed Selector – IDLE
Verify Rotor Freewheeling
10. Caution-Advisory Lights – CHECKED
11. Speed Selectors – 103%
12. RAWS – ON
13. Shoulder Harness – LOCKED
14. Passengers and Crew - ALERTED

2.5 Cruise Checks

1. Engine Instruments – CHECK
2. Transmission Instruments - CHECK
3. Landing Gear – UP (above 100 feet)

2.6 Pre-Landing Checks

1. Passengers and Crew – ALERT
2. Heater – AS REQUIRED (OFF for descent to allow cooling time)
3. FWD Boost Pump – ON (#1 or #2)
4. AFT Boost Pump – ON (#1 or #2)
5. Parking Brake – AS REQUIRED
6. Nose Wheel Lock – AS REQUIRED (Unlocked for normal landing to prevent shear damage)
7. Landing gear – AS REQUIRED (DOWN for land, UP for water)
8. Speed Selectors – MIN 103%

2.7 After Landing

1. Speed Selectors – 103%
2. Ignition switches – OFF
3. Fuel Boost Pumps – OFF
4. RAWS – OFF

2.8 Shutdown Procedures

1. Parking brake – SET
2. AFCS – DISCONNECT
3. Emergency Exit Switch – DISARM
4. Speed Selectors – IDLE
5. Engine Cooling – 1 min. at Idle, In ground taxi, or with collective full down
6. Speed Selectors – SHUT OFF
7. Rotor Brake – ON (below 45% Nr)
8. Electrical switches – CHECKED
1. Start Mode – NORMAL
2. Cargo Hook – SAFE
3. Cabin Heater Vent - NORM
4. The Following Switches OFF: AFCS, APU, Position, Anti-Collision, Fuselage, Anchor, Search, Windshield Anti-Ice, Engine Anti-Ice, Cabin Heater, Pitot Heat, Wiper, Washer, Lower Console Red Lights, Console Lights, Hoist Master, Stick Trim Master, Channel Monitor, Converters, External Power, Battery, Generators

3 Emergency Procedures

3.1 Engine Failure

3.1.1 Emergency Engine Shutdown

1. Speed Selector – SHUT-OFF
2. Fuel Valve - CLOSED
3. Boost Pumps and Crossfeed – CLOSED

3.1.2 Engine Restart in Flight

A failed engine should not be restarted unless it can be determined that it is safe to do so.

1. Ignition Switch - NORMAL
2. Fire emergency shutoff selector handle - IN
3. Speed selector (inop. engine) – SHUT-OFF
4. Emergency fuel control lever - CLOSED.
5. Fuel shut-off valve switch - OPEN.
6. Crossfeed valve switch - AS REQUIRED.
7. Boost pump switches - ON.
8. Starter button – PRESS (until > 19% N1).
9. Speed selector - GRD IDLE.
10. Engine instruments – CHECKED
While the engine is accelerating, check N1, TIT, Fuel Levels, N2, oil temp/press.
11. Speed Selectors – MATCH TORQUES

3.2 Single Engine Operation

3.2.1 To Continue Flight

1. Speed Selector – 110%
2. Collective Pitch – Climb at 150-200 fpm to safe autorotation height. Monitor RPM
3. Engine Restart – ACCOMPLISH (if possible)
4. Engine Shutdown – ACCOMPLISH (if restart is not possible)
5. Land – AS SOON AS PRACTICAL

3.2.2 Single Engine Landing

1. Speed Selector – 110%
2. Approach Speed – 70 Knots
3. At 150 feet AGL, reduce speed and rate of descent.
4. Collective – Increase slightly to cushion the landing.
5. Ground Contact – Slightly nose high, gently reduce collective and apply forward cyclic.

3.2.3 Single Engine Water Takeoff

1. Off-load fuel, equipment and passengers as required.
2. Fuel Dump Values – CLOSED
3. Speed Selector – 110%
4. Emerg. Fuel Lever - CLOSED
5. Cyclic – Forward to maximum water taxi speed
6. Collective – Raise for takeoff. Monitor RPM
7. Climb - Establish

3.3 Fire (Engine/APU)

3.3.1 Engine Fire

1. Speed Selector (affected eng.) – SHUT-OFF
2. Fire Shutoff Handle – PULL
3. Fire Extinguisher – MAIN (RESERVE if necessary)
4. Boost Pumps (affected eng.) – OFF
5. Crew – ALERTED

3.3.2 APU Fire

1. APU Fuel Shutoff – SHUTOFF
2. APU Fire Ext. – FIRE EXT.
3. APU Master – OFF

3.4 Landing Gear Failure

3.4.1 Failure to Retract

1. Landing Gear Lever – DOWN
2. Gear down and locked – CONFIRM
3. Land – AS SOON AS PRACTICAL

3.4.2 Failure to Extend

1. Landing Gear Lever – DOWN
2. Alt. Gear Lever – PULL
3. Gear down and locked – CONFIRM
4. Land – AS SOON AS PRACTICAL

3.4.3 Failure to Lock

If gear fail to indicate down and locked, land with minimum vertical and horizontal airspeed.

Note: Do not attempt to actuate gear until repairs have been made.

3.5 Emergency Start

3.5.1 Battery Start Procedures

1. Rotor Brake – OFF
2. Battery – OFF
3. Accomplish all items in BEFORE STARTING ENGINE section as possible without turning on battery power.
4. Start Mode – MANUAL
5. Battery – ON
6. No. 1 Engine – START
   1. Speed Selector – SHUT-OFF
   2. Start Switch – PRESS
   3. Wait – Min. 10 sec. and N1 above 19%
   4. Speed Selector – IDLE then slowly increase to 45% N1
   5. Starter – ABORT (disengage starter)
7. All Gages – CHECKED
8. Speed Selector – Increase slowly with minimum torque to 103%.
9. Start Mode – NORMAL
10. No. 2 Engine – Start using normal procedures

3.5.2 Start with Emergency Fuel Levers

This procedure should be avoided except when absolutely necessary to complete mission.

1. Start Procedures – As normal up through advancing speed control to IDLE
2. Emerg. Fuel Lever – Advance slowly to accelerate N1 to 56%.
3. Emerg. Fuel Lever – Close slowly
4. If engine continues to run at 56%, follow normal procedures.

3.6 Flight with Emergency Fuel Levers

1. The Emergency Fuel Levers (EFL) bypass normal fuel meter to control fuel flow directly.
2. If using EFLs due to fuel controller failure, control will only be possible above the valve position at the time of the controller failure.
3. Collective changes must be made very slowly with reference to N2 for the affected engine to avoid rotor stall, or engine overspeed.
4. Increases in collective will require increases on the EFL. Decreases in collective will require decreases in the EFL.

4 Servicing

4.1 General

This section describes the servicing model for your S61R. Servicing included normal servicing such as topping off of fluids, and refueling the aircraft, and