NATOPS Flashcards
Systems Knowledge
1
Q
T700-GE 401 and 401C SHP?
A
401 = 1690 401C = 1800
2
Q
Max GW for T/O?
A
18,500lbs
3
Q
Ng > __________ causes Ng governor to cut fuel flow causing flameout.
A
110+/-2
4
Q
3 Functions of ODV
A
- Send fuel to manifold
- Return fuel to HMU during Np overspeed/Hot Start preventer
- Fuel overboard during shutdown
5
Q
When Np exceeds ______ the DECU signals the overspeed solenoid on the ODV stopping fuel flow to the engine
A
115.6 +/- 1.1
6
Q
MGT > than _______ will activate the MGT limiter feature of the engine DECUs resulting in Nr decay
A
401 = 910 C 401C = 891 C
7
Q
Hot Start Preventer
A
Ng < 60%
Np < 50%
MGT > 900C
* ODV solenoid remains latched for 25 secs or until mGT < 300C
8
Q
Starter disengagement occurs @ ______% Ng
A
55 +/-3
9
Q
of igniter plugs for each engine
A
2
10
Q
Engine RPM wheel allows adjustment of both engines simultaneously in range of _________Np
A
94-101% Np
11
Q
Engine out warning occurs?
A
Ng < 60%
12
Q
What is the M/R RPM at 100% Nr
A
296
13
Q
What is the T/R RPM at 100% Nr
A
4916
14
Q
Loss of MRGB oil pressure will render the helicopter unflyable within ____mins
A
15
15
Q
MRGB level low indication likely to illuminate if A/C restarted within ____mins of shutting down from previous flight.
A
30-60
16
Q
Total loss of electrical power will result in uncontrolled rising of CBOX oil temp which will render helicopter unflyable w/in ______mins
A
2.5
17
Q
Total fuel capacity
A
409, 5 unusable
18
Q
Under normal conditions:
- fwd fuel cell supplies ______
- aft fuel cell supplies
A
- Eng 1 and APU
2. Eng 2
19
Q
The canister volumes ensures fuel for a minimum of _____secs of negative g flight.
A
5 seconds
20
Q
When the APU PBA is pushed the _____ opens and _____ is energized.
A
APU SOV, fwd fuel cell boost pump
21
Q
When does FWD and AFT fuel tank lo lights come on?
A
287lbs
22
Q
Max gravity fuel rate to prevent modulating fuel into tanks
A
138 gpm
23
Q
When does aux fuel begin to transfer
A
approx 750 lbs have been used in internal fuel tanks
24
Q
- Engine flame out occurs w/in ___ secs with loss of eng-driven suction pump.
- Does fuel cell boost pumps provide sufficient fuel pressure and volume for normal operation?
A
- 15 secs
2. Yes
25
What is the APU fuel burn rate?
150lbs/hr
26
What is the APU air-cooled starter-generator rated amps?
200 amps
27
What are the DC generators rated at?
28V, 400 amps
28
1. What is the battery rated at and how long does it provide power to the essential bus? 2. How many Nickel Cadmium cells?
1. 24V and 25 amp-hr, 9mins
| 2. 19
29
MRGB oil temp rises ____ with a total loss of electrical power
28C/min
30
What three sources power the AC system
Inverter 1, 2, and 115/26V autotransformer
31
What are the inverters rated at?
115Vac, 1500V-amps
32
What does Hyd 1 power?
MRA, TRA(pri), Oil Cooler Fan (pri), Cyclic secondary boost actuators, Rotor Brake, Pich SCAS, Yaw SCAS
33
What does Hyd 2 power?
MRA, TRA, Oil cooler fan motor, Roll SCAS
34
Maximum elevator movement rate
11.5 deg/sec
35
When does elevator move to stow position?
<40 knots TAS and collective position <10%
36
When does elevator move to hover bias?
A/C above 0ft RADALT, collective <30%, TAS < 45 knots
37
Above 45 knots, elevator position moved based on what?
A/S, longitudinal cyclic, and collective position
38
Maximum + and - elevator position
3.5 to -8 degs
39
If heading hold is engaged below ___ knots, collective switch 8 will trim heading L or R through pedal inputs only and cyclic does not trim heading at all.
40
40
With ALT hold engaged, does a change in altimeter setting cause the aircraft alt to change?
No...Pressure Alt info is referenced to 29.92
41
At what Alt does Hover Hold (Rad Alt Hold) disengage?
5ft
42
Speed hold temporarily disengages above ___ AOB and re-engaged below ___ AOB?
30, 25
43
Engaging Cruise, Alt, and Speed modes w/ tq > ____ may cause overtorque and unusual attitudes.
85%
44
Manually disengaging Hover Hold leaves the Alt Hold mode in ____.
RALT
45
At what g does the FCC cause the cyclic grip to vibrate?
2.5
46
Skids begin structurally deforming to absorb landing energy at sink rate of approx _____ ft/min and protects airframe from structural damage for sink rates up to ___ft/min at GW of ____lbs.
240, 720, 16700lbs
47
Do not actuate the FIRST TEST pushbottom for more than ____ secs. Prolonged use overheats the detector elements.
15
48
The external electrical power shall be set to ___amps max.
750
49
Max PSI for pressure refueling is ___ PSI
55
50
At fueling rates greater than ___gpm, the fwd ful cell may fill before the aft fuel cell and weapon pylon fuel cells are completely full.
138
51
Max helicopter jacking weight?
14,000lbs
52
Max helicopter towing weight?
18,500lbs
53
Ground power cart requirement for APU start is ___ amps with an amp range of ___ to ___.
500, 300-1000
54
APU starters limits
```
30 secs - On
60 secs - Off
30 secs - On
60 secs - Off
30 secs - On
30 mins - Off
```
55
Engine stater limits (16C)
| w/ ignition
60secs
60secs
60secs
30mins
56
Engine starter limits (16-52C)
| w/ ignition
60secs
| 30mins
57
Cross bleed starts require ____% torque
38
58
Engine Wash Starter Limits
```
2 mins - on
5 mins - off
2 mins - on
30 mins - off
* times for motoring are cumulative times w/in 5-min period
```
59
Engine Abort Start Criteria
1. Ng fails to reach 14% w/in 6 secs
2. No MGT indication w/ 30 secs after starter engaged
3. No oil pressure w/in 30 secs after starter engaged
4. MGT reaches 867 during start
5. Starter fails to disengage above 55+/-3% Ng
6. No Np indication w/in 30 secs after Ng at idle
Rotor brake light fails to extinguish 30secs after brake release
60
Max relative wind for rotor brake start?
60knots from any direction
61
Rotor brake limits
1. Do no apply above 60%, below 25%, release prior to 0
2. During rotor brake start, release w/in 25secs after 67% Ng
3. During rotor brake start, light should extinguish w/in 30 secs after brake release
4. Do not exceed engine idle rpm with rotor brake engaged
62
Max sloped landing
6 degs
63
Nr Limits - Power on (Tq >30%)
Min - 91%
Continous - 97-104.9%
Max - 104.9%
64
Nr Limits - Power off (Tq <30%)
Min - 84%
Continuous - 91-110.9%
Max - 110.9%
65
Np Limits
Continuous: 99-101.7%
Transcient: 101.8-116.9% (20 secs total, max 12 secs above 113.3%)
Max: 116.9%
Avoid: 55-70%
66
Engine Torque Limits (401 and 401C)
401
Continuous: 0-62.4%
Transient: 62.4-65.7% (30 mins)
Max: 65.7%
401C
Continuous: 0-65.7%
Max: 65.7%
67
MRGB Tq Limits
```
Continuous: 0-100%
Transient: 100.1 - 104.9%
Caution: 105-119.9%
Max: 120%
*6 transients w/in 105-110.9 or operation w/in this range for more than 10secs may result in gearbox damage. Any operation w/in 111-119.9% may result in gearbox damage.
```
68
MGT Limits
```
Continuous: 400-800C
Intermediate: 801-867C (30mins)
Contingency: 686-917C (2.5mins)
Transient: 9167-964C (12 secs)
Starts = 867C max
```
69
Ng Limits
Continuous: 0-102.1%
Transient: 102.1-105.1% (12secs)
Max: 105.2%
70
Eng Oil Temp Limits
Continuous: 35-131C
30 min: 132-149C
Max: 150C
71
Engine Oil Pressure Limits
```
Min: 20 psi
Caution: 20-30 psi
Continuous: 30-100 psi
Max: 100 psi
Cold Start: 200 psi
```
72
MRGB Temp Limits
Caution: -50-0C
Normal: 0-100C
Caution: 100-110C
Max: 110C
73
MRGB Pressure Limits
```
Min: 25 psi
Caution: 25-40 psi
Normal: 40-70 psi
Caution: 70-100 psi
Max: 100 psi
```
74
CBOX Temp Limits
Caution: -50-0C
Normal: 0-100C
Caution: 100-110C
Max: 110C
75
CBOX Pressure Limits
```
Min: 25 psi
Caution: 25-70 psi
Normal: 70-90 psi
Caution: 90-150 psi
Max: 151 psi
```
76
Hyd Temp Limits
```
Min: -7C
Caution: -7-10C
Normal: 10-110C
Caution: 110-115C
Max: 115C
```
77
Hyd Pressure Limits
```
Min: 2000 psi
Caution: 2001-2700 psi
Normal: 2700-3150 psi
Caution: 3150-3850 psi
Max: 3850 psi
```
78
Main Gen/Battery/Esstl and Non-Esstl Volt Limits
```
Min: 18 VDC
Caution: 18-22 VDC
Normal: 22-29 VDC
Caution: 29-30 VDC
Max: 30 VDC
```
79
Main Gen Amps Limits
Normal: 0-400 amps
Caution: 400-600 amps
Max: 600 amps
80
APU Gen Limits
```
Low: 0-17.9 VDC
Avoid Range: 18-21.9 VDC
Normal: 22-29 VDC
Avoid: 29.1-29.9 VDC
High: 30 VDC
```
81
APU Amps Limts
Normal: 0-200 amps
Avoid Range: 200.1-299 amps
High: 300-400 amps
82
Esslt and Non-esstl AC BUS Limits
```
Min: 104 VAC
Caution: 104-108 VAC
Normal: 108-119 VAC
Caution: 118-125 VAC
Max: 125 VAC
```
83
Max airspeed below and above 10,000' DA
>10,000': 200 KIAS
| <10,000': 100 KIAS
84
Max airspeed for autos, sideward/rearward flight, SCAS failure
auto: 120 KIAS
side/rear: 45 KIAS
SCAS: 100 KIAS
85
Max operational altitude
14,000' DA
* CNAF states "for mission essential flights in RW aircraft, time above 10,000' shall not exceed 1 hr and alt should not exceed 13,000'
86
Roll limit for operations above 10,000' DA
30 deg AOB
87
Prohibited Maneuvers
1. Aerobatic Maneuvers
2. Practice autos to touchdown
3. Practice autos entries w/in shaded area of HV diagram
4. Dual-engine throttle chops above 120 KIAS
5. SE throttle chops above 60% MRGB Tq
6. Do not exceed 50% MRGB tq @ A/S above Vh while in a dive
88
Minimum fuel requirement
No flight shall be planned to terminate with a fuel state less than 300 lbs
89
Engine starting may be difficult under hot ambient temps, _____ or above, and/or using JP-4 because of fuel vaporization in the HMU.
30C (86F)
90
Do not introduce fuel until MGT is below ____ during engine start.
145C
91
Normal hover altitude according to NATOPS
5-7'
92
During auto, best glide A/S is ____ and min ROD is ____.
110 KIAS, 80 KIAS
93
Does MGT limiting still function if the engine is in DECU lockout?
No
94
Engine cool down for 401 and 401C with Ng less than ___%.
1mins (401C), 2mins (401)m 90%
95
If restart from high power setting without engine cool down then what are two conditions allowed for restart.
1. restart within 5 mins
| 2. allow cool for 4 hours prior to restart
96
Is engine cool down period required if shutting down and Ng has not exceeded 90%?
No. Throttle closure may be initiated from 100% Np/Nr.
97
What may happen if you fail to wait 20 secs to secure battery after shutting down APU?
May corrupt EGI non-volatile memory rendering EGI inoperable
98
What is the desired autorotative Nr?
96-100%
99
Max Nr during auto is achieved at what airspeed range?
70-90 KIAS
100
List five factors affecting Nr during auto
1. A/S
2. GW
3. DA
4. Cyclic Flare
5. Pilots Technique
101
Severe G WCA comes on at ____ g's.
3.0
102
How many attempts does CBOX/IGB/MRGB/TRGB chip detector have before reporting via WCA?
3 burn attempts
103
At what G does stick buzzer and G limit WCA occur?
2.5 g's
104
At what negative G do you get a WCA?
-.5 g's
105
Emergency Shutdown
* 1. Throttles - Close
* 2. Fuel PBAS - Closed (illuminated)
* 3. Rotor Brake - On
* 4. APU - Off
* 5. Battery - Off
6. Exit Helicopter
106
Engine Hot Start
* 1. Throttle (AE) - Close
* 2. Fuel PBA (AE) - Close
* 3. START PBA (AE) - Engage. Motor until MGT <150C or 2 mins auto timeout is reached.
4. Helo - Shutdown
107
Engine Fire on Start (external)
* 1. Throttles - Close
* 2. Start PBAs - Off
* 3. Fuel 1 and 2 PBAs - Close
* 4. Eng fire PBA (AE) - ARM
* 5. Ready/Discharge PBA - Discharge.
6. Helo - Shutdown
7. Exit Helicopter
108
Hyd System 1 Fail
*1. Establish <100 KIAS and AOB <35 deg
*2. Cooler PBA - Hyd 2
3. Hyd 1 PBA - Off
4. Hyd CONT CB - IN
5. Land ASAP
If extended flight is required:
6. MRGB/CBOX temp - Monitor
109
Hyd System 2 Fail
*1. Establish <100 KIAS and AOB <35 deg
*2. Cooler PBA - Hyd 1
3. Hyd 2 PBA - Off
4. Hyd CONT CB - IN
5. Land ASAP
If extended flight is required:
6. MRGB/CBOX temp - Monitor
110
Hyd System Overtemp
*1. HYD 1/2 HT EXCH CBs - IN
If CBs are in and hyd temp exceed 115C:
*2. Applicable Hyd System Failure - Execute
If CBs able to reset and temp returns to normal:
3. Hyd temp - Monitor
4. Land ASA Practical
111
Rotor Brake Pressurizes in Flight
```
*1. Rotor Brake handle - Stowed
If warning light remains illuminated and secondary indications exist:
*2. Hyd 1 PBA - Off
*3. Cooler PBA - HYD 2
*4. Nr - Monitor
5. A/S - Adjust 100 KIAS or less
6. Land ASAP
```
112
SCAS Hardover
* 1. SCAS - DISENG
* 2. A/C Control - Regain
3. A/S - <100 KIAS
4. Land ASA Practical
113
What do the three individual windings on the alternator power?
Ng signal circuitry, ignition circuitry, and DECU circuitry
114
What happens if rotating shaft of eng alternator fails?
Loss of Ng indication, loss of eng start capability, but DECU continue to operate normally from A/C power
115
A fully charged battery may provide up to ___ mins of battery power to the essential bus.
9
116
Complete Electrical Failure
*1. Check BATT PBA - On
If battery power is not restored:
*2. Land Immediately
117
Approx how long does it take for MCs to come back on line?
2.5mins
118
Dual Engine Fire in Flight
* 1. Controls - adj
* 2. Stores - jett
* 3. Throttles - close
* 4. Fuel 1 and 2 PBAs - Close
* 5. Eng Fire PBAs - Arm
* 6. Ready/Disc PBA - Discharge
* 7. Autorotative landing - accomplish
119
SE Fire in Flight
* 1. Controls - adj
* 2. Stores - Jettison
* 3. Throttle (AE) - close
* 4. Eng fire PBA (AE)- Arm
* 5. Ready/Discharge PBA - Discharge
* 6. Fuel PBA (AE) - check close
7. Xfeed PBA - Auto
8. INTCON PBA - Open
9. Land ASAP
120
Electrical Failure
```
*1. Affected electrical equipment - Off and CBs pulled
If fire persists:
*2. INV 1 and 2 PBAs - Off
If fire persists:
*3. Gen 1 and 2 PBAs - Off
If fire persists:
*4. Land immediately
continued....
```
121
Fuel cell boost pumps operate when the ____ is positioned to OPEN or when a _____ fuel conditions exits.
Xfeed, low
122
Does the MRGB oil level indication update during flight?
No. It is not updated after start-up. "GO" indication will persist even if no oil remains in the system.
123
During autorotative landing, at an alt of ___' AGL, a progressive flare to ___ to ___ degrees nose up should be established by moving the cyclic aft combined with a slight collective adjustment to maintain Nr.
150, 15 to 30 degs
124
Touchdown from auto should be accomplished with some forward airspeed (____ to ____ knots) and slightly nose up attitude.
20 to 30knots
125
Annular combust has ___ fuel injectors.
12
126
Compressor section has ___ axial and ___ centrifugal stages.
5 axial and 1 centrifugal
127
Each engine has ___ igniters.
2
128
Transmission is tilted ___ degrees fwd.
2 degs
129
MRGB has ___ chip detectors.
4
130
CBOX has ___ chip detectors.
3 (one next to each gen and one in the sump)
131
Main Rotor Blade diameter is _____.
48'
132
___ and ___ blades have pin pullers.
Red and Blue
133
T/R diameter?
9' 9"
134
What does IAS stand for?
Integrated Avionics System
135
What are the fours Buses?
Avionics, Mission, Wpns, EW
136
What does WIRTS stand for, what do they do, how many are there, and how are they broken down?
Wiring Integration Remote Terminals, convert analog signals to digital signals for the MCs, four, 2 x AWIRT and 2 x CWIRT
137
What does AWIRT and CWIRT stands for?
Aircraft Wiring and Integration Remote Terminals, Cockpit Wiring and Integration Remote Terminals
138
If WOG in normal indicated incorrectly during a/c start what CB should you cycle?
AFCS YAW
