NATOPS Chap 3

Question 1

Maintenance Authorization

Answer 1

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

Question 2

Fuel NATO Codes

Answer 2

Fuels having the same NATO code are interchangeable

Question 3

Takeoff

Answer 3

To prevent flameout during launch, establish IGE hover for 10 sec prior to takeoff. If FUEL PRESS caution illuminates during hover, do not depart until light self clears.

Question 4

JP-4/JET B

Answer 4

1. All takeoffs shall stabilize in hover for 10 sec
2. Single-eng training prohibited
3. Lower operating temps, slower acceleration and shorter ranges may be experienced.
4. Next 2 refuelings with primary fuel shall be treated as if JP-4/JET B is in the tanks.

Question 5

Fuel Changeover

Answer 5

1. If fuel type is unknown or mixture that includes JP-4/JET B, assume all tanks are filled 100% with those.
2. During ground/flight ops, empty external tank inot main tanks before refueling.
3. Periodically refuel external tanks and/or main tanks with JP-5/JP-8 or equivalent.

NOTE A cumulative total of at least 2 refuelings of JP-5 or JP-8 equivalent must be added to the main tank, either by aux transfer or direct main tank refuel before fuel composition is assumed to be rid of JP-4/JET B

Question 6

Hangaring

Answer 6

When fueling with JP-5 is not possible, helos shall not be hangared until flashpoint of fuel mixture is above 120F.

NOTE For planning purposes, a fuel mixture of 70% JP-5 and 30% JP-8 or Jet A-1 will ensure min flashopoin of the mixture is above 120F.

Question 7

PRIST

Answer 7

Discharged via aerosol can is not authorized.

Question 8

Main Tanks

Answer 8

JP-5 - 590gal, 4012lbs

JP-8 - 590gal, 3953lbs

Question 9

Fuel icing

Answer 9

NOTE When operating with fuel that does not contain Fuel System Icing Inhibitor (FSII), bulk fuel temp shall be maintained above 0C.

1. If the ac has been in heated hangar areas, ac should be launched within 1 hr after being moved to flight deck
2. If ac is outside for more than 1 hr, bulk fuel temp should be checked by draining into bottle that has been outside for ~15 min.
3. If fuel is 0C or less, ac should be hangared or partially defueled and refueled with warm fuel so that bulk temp rises above 0C.

Question 10

Pressure Refueling

Answer 10

Ensure sono launcher in SAFE

Shall not exceed 55psi

If helo must be refueled when quality of fuel is in question, it should be refueled through HIFR fitting.

If neither precheck valve will secure fuel flow, fueling should be continued only if necessary.

Question 11

Gravity Refueling

Answer 11

Is not authorized with engines or APU running.

Question 12

RAST Operations

Answer 12

1. Main and tail landing gear tires and struts have been serviced.
2. Static vertical clearance between deck and lowest point on aux tank shell not less than 12.0in.
3. Aircraft gross weight during ops shall not exceed gross weight at time of static vertical clearance measurement.

Question 13

Engine Service

Answer 13

7.3 quarts

Required when oil level less than halfway between ADD and FULL marks.

Wait at least 20 min after shutdown before checking oil level.

Question 14

APU Service

Answer 14

2.0 quarts

Turbomach/Sundstrand - haflway between full and refill

Garrett - indicated on dipstick

Wait 1 hr after APU shutdown to check oil level.

Question 15

Main XMSN Service

Answer 15

7.5 gal

Indicated on dipstick

30 min after shutdown - HOT
2 hours after shutdown - COLD

Question 16

IGB/TGB Service

Answer 16

2.75 pints

IGB - Fill if bottom of outer circle can be seen

TGB - Properly serviced when oil within lines/green area with pylon spread.

CAUTION Do not service IGB or TGB while tail pylon folded.

Question 17

Hydraulic Service

Answer 17

Reservoir - 1.0 quart
Util Hyd - .92 quart
Rescue Hoist - 1.16 quart

1/8in wide strip is where measured; allowed up to 3/8in into blue

All 3 white lines indicate full reservoir

Question 18

Sonobuoy Launcher

Answer 18

Service to 1175+/-25psi

Question 19

Windshield Washer

Answer 19

When operating below 0C, fill reservoir with 50% water, 50% isopropyl alcohol.

Question 20

Tiedowns

Answer 20

Initial - 2x each mount (4 total) - prior to and after shipboard ac movement, startup and immediately after landing.

Permanent - 2x each attach point (12 total) - required when not at flight quarters.

Heavy Weather - 3x each attach point (18 total) - required when surface winds reach avg velocity of 35 knots and/or sea state of 8ft, or wind over deck exceeds 60 knots, pitch exceed 4* or roll exceeds 12*

Question 21

Main Rotor Tiedown

Answer 21

Should be done when helo will be parked for a period of time or when actual or projected wind conditions are >45 knots