NATOPS Chapter 3

Question 1

Distance from helicopter for flame producing

Answer 1

Loose pyrotechnics, smoking, or striking matches or any flame-producing product within 50’ of the helicopter may result in fire

Question 2

Who is authorized to perform servicing

Answer 2

All PQMs and aircrewman qualified in model are authorized to perform servicing and handling when qualified maintenance personnel are not available

Question 3

Where can you park the helicopter

Answer 3

The helicopter shall not be parked in the vicinity of possible sources of ignition.

A minimum of 50 feet should be maintained from other aircraft and structures.

75 feet should be maintained from any operating radar set.

Question 4

What shall be near when refueling

Answer 4

During all refueling operations, fire-extinguishing equipment shall be readily available

Question 5

What contributes to vapor bubbles

Answer 5

Nose pitch attitudes, roll attitudes, and low power operations or prolonged on-deck operations such as refueling

Question 6

What to do to ensure no vapor bubbles

Answer 6

Establish IGE hover for 10 seconds prior to transition to forward flight.

Warning
Flameouts may be encountered following nosedown ground ops in excess of 10 min when using JP5, JP8 or quivalent

Question 7

JP-4/JETB Operational Restrictions

Answer 7

Warning
Flameouts may be encountered on the ground or inflight at certain fuel temps when JP4/JETB are used

1. All takeoffs shall stabilize in a hover with no fuel pressure cautions for a minimum of 10 seconds before commencing transition to forward flight.
2. Single-engine training is prohibited
3. Operating characteristics may change, Lower operating temps, slower acceleration and shorter range may be experienced.
4. Due to vapor qualities, the next two fuelings with a primary fuel shall be treated as if JP4/JET B is in the tanks.

Question 8

JP4/JETB Fuel Changeover procedures

Answer 8

1. If the fuel type is unknown, or is a mix of JP4, then assume all tanks are filled with JP4 JETB
2. During ground/flight operations, empty the external tanks into the mains before refueling
3. Periodically refuel external tanks and/or main tanks with JP5/JP8

Question 9

Primary Fuel

Answer 9

A fuel which is authorized to use for continuous unrestricted operations

Question 10

Restricted Fuel

Answer 10

A fuel which imposes operational restrictions on an aircraft.

Question 11

Emergency Fuel

Answer 11

A fuel which may be used for a minimum time when no other primary or restricted fuel is available, in case of emergency or operational necessity.

Question 12

Fuel with susceptibility to icing

Answer 12

Keep the bulk fuel above 0*C

1. If aircraft is in a heated hangar, launch within 1 hour after being moved to the flight deck
2. If aircraft is outside more than 1 hour, bulk fuel temp should be checked
3. If fuel is 0C or below, aircraft should be hangared until fuel is above 0C

Question 13

Before fueling what should be checked

Answer 13

helicopter and refueling-unit grounding devices shall be inspected for proper ground

Question 14

Refueling IRT sono launcher

Answer 14

Refueling with the sonobouy launcher safety valve not in the SAFE position may result in inadvertent sonobuoy launch causing personal injury

Question 15

Fuel cell rupture

Answer 15

Pressure shall not exceed 55psi, failure to monitor fuel cell pressure may result in fuel cell overpressurization

Question 16

How to refuel if quality of fuel is in question

Answer 16

If the helicopter must be fueled when the quality of fuel is in question, it should be refueled through the HIFR fitting, it is capable of removing both water and particulate matter.

Question 17

Primary Fuels

Answer 17

JP-5
JP-8
F-24
TS-1

Question 18

Restricted Fuels

Answer 18

A1
A
B
JP-4

Question 19

Emergency Fuels

Answer 19

JP8+100
F-27

Question 20

Defueling Shipboard

Answer 20

JP8,TS1, JP8+100, F24 shall not be defueled shipboard due to the flashpoint less than 140*c

Question 21

Fuel System Icing Inhibitor

Answer 21

PRIST discharged via aerosol cans is not authorized, it doesn’t mix well and settles to the bottom of the tank

Question 22

JP-8 + 100 restrictions

Answer 22

USN/USMC are not authorized to use JP8+100 except in emergency situations. Pilot approval shall be obtained and the aircraft shall be conspicuously placarded, and maintenance shall be informed.

Question 23

Main tank JP-5

Answer 23

590 gallons, 4012 pounds

Question 24

Main tank JP-8

Answer 24

590 gallons, 3953 pounds

Question 25

Gravity Fueling

Answer 25

Aux fuel tanks are gravity refueled individually Gravity refueling is not authorized with engines or APU operating. Internal tank pressure shall be checked prior to removal of the filler cap to prevent fuel spills

Question 26

RAST operations with Aux tanks

Answer 26

1. Main and tail struts have been serviced before flight 2. Static vertical clearance between the deck and lowest point of the aux tank shall not be less than 12 inches 3. Aircraft gross weight during RAST operations shall not exceed gross weight of the helicopter at the time of clearance measurement

Question 27

Engine Oil Capacity

Answer 27

7.3 Quarts MIL-PRF-23699

Question 28

APU Oil Capacity

Answer 28

2.0 Quarts MIL-PRF-23699

Question 29

Main Transmission Capacity

Answer 29

7.5 Gallons DOD-PRF-85734

Question 30

Int/Tail Gearbox Capacity

Answer 30

2.75 Pints DOD-PRF-85734

Question 31

Hyd Reservoir Capacity

Answer 31

1.0 Quart MIL-PRF-83282

Question 32

Util Hyd Capacity

Answer 32

0.92 Quarts MIL-PRF-83282

Question 33

Rescue Hoist Capacity

Answer 33

1.16 Quarts MIL-PRF-23699

Question 34

Engine Stater Capacity

Answer 34

200 cc MIL-PRF-23699

Question 35

Engine Oil Servicing

Answer 35

Required when the sight glass is less than halfway between ADD and FULL; service to 1 inch below full mark or adjacent to top set of bolts. Wait 20 min after engine shutdown to check oil level.

Question 36

APU Oil Servicing

Answer 36

Checked via the dipstick. Wait 1 hour after APU shutdown prior to checking oil level.

Question 37

Main Transmission Oil Servicing

Answer 37

Checked via dipstick, When at ADD required approx 2 Quarts of Oil to return to FULL. Accurate readings are not possible until 30 min after shutdown. The hot scale is used 30min-2hours, and cold scale used 2 hours or onward.

Question 38

Tail and Intermediate Oil Servicing

Answer 38

Intermediate- oil level in the inner circle. Should be refilled if bottom of outer circle can be seen. Tail- oil level is within the lines/green area. Should be refilled if below lower line. Caution Do not service while tail pylon is folded; sight gauges are not accurate, improperly serviced gearboxes may result in gearbox failure.

Question 39

Hydraulic System Servicing

Answer 39

1 US quart at FULL mark. Red requires 2/3 pint. Piston movement up to 3/8 inch into the blue zone is acceptable.

Question 40

Utility Hyd System Servicing

Answer 40

4 white stripes indicated over-serviced 3 white stripes indicates full 2 white stripes indicate refill needed 1 white stripe is an empty reservoir. The reservoir shall be full regardless of aircraft configuration.

Question 41

Blade Damper Servicing

Answer 41

Hydraulic Fluid and Nitrogen, should be in the green or yellow (full) area.

Question 42

Sonobuoy launcher pressure

Answer 42

serviced to 1175+-25 psi Min pressure to jettison a full launcher is 1100psi When vent handle not in safe, servicing may result in inadvertent launch causing injury.

Question 43

Windshield Washer servicing

Answer 43

Reservoir located beside pilot seat, serviced with water. In temps below 0*C serviced with 50% water 50% isopropyl alcohol.

Question 44

Fire Extinguisher Servicing

Answer 44

When they have lost their charge, shall be replaced with fully serviced units.

Question 45

Initial Tiedown

Answer 45

Consists of 4 tiedowns, two on each main mount. Required just prior to and after shipboard aircraft movement, shipboard startup, and immediately after landing

Question 46

Permanent Tiedown

Answer 46

Consists of 12 tiedowns. Two on each attachment point, and is required when not at flight quarters.

Question 47

Heavy Weather Tiedown

Answer 47

Consist of 18 tiedowns, three on each attachment point. Required when winds are an average velocity of 35 knots or greater and/or sea state of 8 feet, or wind over the deck exceeds 60 knots, pitch exceeds 8, or roll exceeds 12.

Question 48

Hangar Tie Town

Answer 48

Not secured with RAST but secured with chains, up to gw 20,500lbs Secured with RAST, up to gw 23,500 lbs

Question 49

On-Deck Tie Down

Answer 49

Up to moderate weather- up to 23,500 lbs Up to and including heavy weather - up to 20,500 lbs

Question 50

Main Rotor Tiedown

Answer 50

Tiedown of the main rotor should be done when actual or projected weather are 45 knots or above.

Question 51

Missile covers?

Answer 51

Hellfire missile seeker covers shall be installed before commencement of ground operations.