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Monte Natops > Natops notes > Flashcards

Natops notes Flashcards

1
Q

Purpose of Natops

A

In the Letter of Promulgation: The NATOPS is a positive approach toward improving combat readiness an achieving a substantial reduction in the a.c mishap rate.

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2
Q

N/W/C

A

-Explanatory information about an operating procedure, practice, or condition etc that may result in injury, death, or loss of a.c if not carefully observed or followed.
-“ “ that may result in damage to equipment if not carefully observed or followed.
-“ “ that must be emphasized

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3
Q

Land imm/poss/practical

A

-Means execute a landing without delay
-Land at the first site at which a safe landing can by made
-Extended flight is not recommended. Landing site and duration of flight are at the discretion of the PIC

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4
Q

Shall/Should/May/Will

A

-Shall- Is used only when application of a procedure is mandatory
-Should- Is used only when the application of a procedure is recommended
-“May” Need not” are used only when application of the procedure is optional
“Will”- Indicates futurity and never indication any degree of requirement for application of a procedure

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5
Q

Air through the Eng

A

30 % for combustion. The rest:
T2- Compressor Inlet Temp
T3- Compressor Discharge Px
Cooling Combustor/Turbines
ENG Oil Seal Pressurization

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6
Q

What does NG drive

A

Compressor and AGB

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7
Q

What does HMU contain
& FXN of HMU

A

HMU contains - 8 thinks
-Hi-Px Pump
-Ng governor
-Metering valve
Linear variable displacement transducer (LVDT)
-Q motor servo
-Variable geometry vane servo
-Vapor vent
-Shutoff valve

-Rapid engine transient response through collective compensation
-Automatic fuel scheduling for engine start
-NG governing: HMU- HMU receives T2, P3, and Ng inputs which are used to schedule fuel for min flow, max flow, and variable geometry vane control.
-Flameout/Compressor stall protection- HMU adjusts variable geometry vane position and opens anti-ice/start bleed valve to prevent compressor instability.
-Acceleration Limiting- Ng gov ensures any PCL motion will result in safe eng ops & will not cause engine damage. Except for intentional shutoff of PCL, an inadvertent shutdown will not occur during PCL motion
-NG Overspeed Protection- HMU mechanically limits Ng to 110+/-2. If the Ng servo w/in the Ng gov reaches a position corresponding to an overspeed, a centrifugal valve secures fuel flow to the engine. Once overspeed condition has passed, the valve reopens, allowing normal ops to resume.

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8
Q

ODV functions

A

When PCL advanced to IDLE during start, shutoff valve opens & allows metered fuel to flow to ODV inlet.
-Traps fuel upstream, which keeps the fuel/oil heat exchanger full, so that system priming is not required prior to the next start
-Returns fuel back to HMU if the Np overspeed is energized or if the EDECU hot start preventer is activated
-Provides fuel to 12 fuel injectors during engine start & operations
-Purges the main fuel manifold overboard, after engine shutdown, through a shutoff & drain valve to prevent coking of fuel injectors

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9
Q

EDECU FXN-16

A

4N
Np Governing
Np Overspeed Protection
Np Overspeed Test
Ng Decay rate relight ft
C (MAD) Manual, Auto, Dual Auto
Hot Start Prevention
Eng Load Sharing
Fault Diagnostics
TGT Limiting
Automatic Ignition
Signals
TDI
ENG Speed Trim
D Edecu Lockout

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10
Q

What things does alternator power

A

Ignitor assembly, EDECU, NG vids signal.
Also, Alternator supplies an Ng signal to the vids in cockpit.

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11
Q

Explain the 3 C-Pwr: MAD

A
  1. Manual C Power: Place switch ON allows TGT increase to 903 C. Max contingency range power (CRP) limiter prevents further increase in fuel flow to engine at 891 +- 10. Will get #1/2 C PWR ON and ECS shutdown.
  2. Auto-C Power: Enabled in OEI conditions. When:
    - Q from one engine is below 50%, opposite engine EDECU auto resets TGT limiter from 866 +-10 to 891 +-10. #1/2 Advisories will not illuminate to indicated C power has been activated.
  3. Dual-Engine Auto C Power- EDECU bypass 10 min TGT limit 866+-10. Limits a.c to 891 +-10. One or more of the following MUST exist:
    - Np drops below 96%
    -Greater than 3% droop between reference Np and actual Np reference point
    -Greater than 5% per second Np droop rate exists with Np less than or equal to Np reference point
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12
Q

Anti-Ice Operation

A
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13
Q

3 Pigs

A
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14
Q

Leak Detection Isolation (LDI)

A
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15
Q

Emergency “Button”

A

Squaks 7700, Both radios transmit on guard. May not want this- Inst flight or shipboard environment.

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16
Q

Single Engine Conditions

A

Flight regime that permits SUSTAINED flight with OEI. Establishing single-engine conditions may include increasing power available (turning C power on and engine anti-ice off), decreasing power required (dumping fuel and jettisoning cargo), and achieving single-engine airspeed.

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17
Q

A.C Tie Downs Ch.3.2-8

A
  1. Initial-Tie down (4) Two on each main mount
  2. Permanent Tie-down (12) Two on each attachment point (not at flight quarters)
  3. Heavy Wx Tie-down (18)
18
Q

Heavy Wx Tiedowns 3.2-8

A

18 (3 on each attachment point. Required with wx conditions in which surface winds reach average velocity of 35 KT or greater and/or sea state of 8 feet, or wind over deck exceeds 60 KT, pitch exceeds 4, roll exceeds 12.
CX: A.C should be moved into the hangar prior to the onset of heavy weather conditions in order to prevent damage to a.c (wind in excess of 60KT)

19
Q

TQ measured how? Where is signal fed?

A

2.1-20

20
Q

Blowback

A
21
Q

Fuel Definitions

A

Primary: A fuel that the aircraft is authorized to use for continuous unrestricted operations
Restricted: A fuel that imposes operational restrictions on the aircraft
Emergency: 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.

22
Q

LDS Malfunction

A
23
Q

Primary missions (5)

A

SUW, ASW, EW, Command and Contro, and NCO

24
Q

Secondary missions (7) FANILA H

A

1.Fleet support ops
2. Amphibious warfare
3. Naval Special Warfare
4. Intelligence Ops
5. Logistics
6. Air Warfare
7. Health services

25
Q

AFCS 19 fxns

A

5 Holds, 5 Hovers, 3 “Ations” MT DABS

26
Q

Official Name: 243.0, 121.5

A

Maritime air distress signal (MADS)
International Air distress signal (IADS)

27
Q

SAR Common

A

282.8

28
Q

Life raft
Vest

A

LRU-1
LPU-32

29
Q

Level A Med kit Nomenclature
Level B-

A

Level B- has oxygen

30
Q

what do u lose in lockout and what are you controlling

A

Lose TGT limiting, Np governing, and load sharing. Manually controlling Np and Ng

31
Q

Inputs to HMU:
2 mechanical linkages
1 electrical signal

A
  1. Cockpit input from collective via LDS
  2. PCL via the PAS
    Electrical from EDECU actuates the Q motor servo to trim Ng for power turbine control
32
Q

HMU responds to the PCL for:

A
  1. Fuel shutoff
  2. Setting eng start fuel flow with automatic acceleration to ground idle
  3. Setting permissible Ng up to maximum
  4. Fuel priming
  5. EDECU override (LOCKOUT)
33
Q

Why is the fuel schedule intentionally placed at a higher-than- required power level?

A
  1. Fail-safe to high power. Q motor is designed to reduce the schedule to the desired power level. So, loss of Q motor electrical current causes schedule to return to highest power level. Biased hi due to engine electrical fx wont cause power limiting.
  2. Power available with OEI. Remaining engine’s gas generator can ^ power sufficiently up to C power limit.
34
Q

EDECU inputs from cockpit
EDECU inputs from Helo
EDECU sends signals to cockpit

A
  1. C-power
  2. ENG SPEED TRIM switch
  3. ENG OVERSPEED TEST A & B
  4. 400 Hz Power
  5. Np demand
  6. Q from other engine
  7. HMU (LVDT)
  8. TGT
  9. Np
  10. Q
  11. C Power
35
Q

EDECU Fault code 15

A

Could lead to Hi-side fx

36
Q

What if you don’t suppress EDECU fault codes?

A

Prevents AFCS ground checks & automatic blade fold dues to Q signal being relayed to AFCC computer

37
Q

Why could you possibly see TGT 71 C higher than normal

A

N: If EDECU isn’t powered by either the alternator or airframe power through ENG OVSP CB, (so if it is pulled), the -71 C bias will be absent, and TGT will indicate 71 higher than expected.

38
Q

List the primary fuels (4) :

A

US Mil Code: JP-5, JP-8, F-24, TS-1
FLIP Code: J5, J8, A++, N/A

39
Q

Emergency Fuels:

A

US Mil Code: JP8 + 100, F-27
FLIP Code: J8 + 100, N/A

40
Q

Name the OIL for Engine and APU

A

MIL-PRF-23699

41
Q

Wait times for checking oil:
APU
Engine
Main Transmission

A

-APU: Wait 1 hour after shutdown
-Engine: Wait 20 mins after shutdown
-Main Transmission: Has hot and cold scale. Accurate readings not possible until 30 mins after shutdown. HOT: 30 mins- 2 hours post shutdown
COLD: 2 hours or longer post shutdown

42
Q

Hyds Chapter 3
Checking HYD Level
HYD Servicing

A

All hyd pump reservoirs are 1 Quart capacity
When indicator reaches REFILL (RED), 2/3 of a pint is required to return indicator to FULL (GREEN)
Fluid level indicator is 1/8th of an inch wide.
Piston mvmt of up to 3.8th inch into blue is acceptable. When piston is beyond this limit, bleed off enough fluid to bring piston back to 3.8 in above full limit.
Servicing via Refill Selector Valve
OUT 1- No. 1 Hyd pump
OUT 2- No. 2 Hyd pump
OUT 3- Backup Hyd pump
OUT 4- Rotor brake (stow position)

Monte Natops (1 decks)

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