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AH1Z > Limits > Flashcards

Limits Flashcards

1
Q

MINIMUM CREW REQUIREMENTS

A

The minimum crew consists of one pilot qualified in the AH-1Z helicopter. Solo flights are conducted from the aft
pilot station only.

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2
Q

APU LIMITATIONS

A 
APU starts (with battery only) shall not be performed at temperatures below –25 °F (-32 °C). Below –25 °F (–32 °C), an external power cart shall be
used, or if no power cart is available, battery should be maintained or stored
at temperatures above 0 °F.

Ground power cart requirements for APU start is 500 amperes with an ampere range of 300 to 1,000 (min/max).

Voltage requirement is 28 Vdc with a voltage range of 23.9 to 29.1 Vdc.

APU is not intended for operation in flight and shall be turned OFF prior to takeoff.

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3
Q

APU Starter Limits

A 
30 seconds ON.
60 seconds OFF.
30 seconds ON.
60 seconds OFF.
30 seconds ON.
30 minutes OFF.
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4
Q

Engine Starter Limits

A 
Less than 61 °F (16 °C) 
First Cycle   60 seconds
Second Cycle   60 seconds
Third Cycle   60 seconds
Fourth Cycle   30 minutes

61° to 126 °F (16° to 52 °C)
First Cycle 60 seconds
Second Cycle 30 minutes

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5
Q

Engine Wash Starter Limits

A

STARTER ON-DELAY BTWN CYCLES
2 minutes 5 minutes
2 minutes 30 minutes

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6
Q

Hot Start

A

The maximum MGT during starting shall not exceed 867 ºC before starter cutout

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7
Q

Engine Start Abort Criteria

A
  1. Ng fails to reach 14 percent within 6 seconds.
  2. No MGT indication within 20 seconds after initial indication of Ng.
  3. No oil pressure within 30 seconds after starter is engaged. Do not motor engine if aborting due to lack of
    oil pressure.
  4. MGT reaches 867 °C before starter disengages.
  5. Starter fails to disengage above 55 ±3 percent Ng.
  6. No Np indication within 30 seconds after Ng reaches idle (67 ±3 percent).
  7. ROTOR BRAKE light fails to extinguish 30 seconds after brake release.
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8
Q

MAIN ROTOR LIMITS

A

POWER ON
91% TRANSIENT OPERATION
97-104.9% CONTINUOUS OPERATION
104.9 MAXIMUM

POWER OFF
84% TRANSIENT OPERATION (1G)
91-110.9% CONTINUOUS OPERATION
110.9% MAXIMUM

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9
Q

POWER TURBINE NP

A

99-101.7% CONTINUOUS OPERATION
101.8-116.9% TRANSIENT OPERATION (12 SEC)
116.9% MAXIMUM
55-70% AVOID

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10
Q

ENGINE TORQUE

A

T700 GE-401
0-62.4% CONTINUOUS OPERATION
62.4-65.7% TRANSIENT OPERATION (30 MIN)
65.7% MAXIMUM

T700 GE-401C
0-65.7% CONTINUOUS
65.7% MAXIMUM

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11
Q

MRGB TORQUE

A

0-104.9% CONTINUOUS

105-110.9% TRANSIENT OPERATION (10 SEC)

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12
Q

MGT LIMITS

A

NORMAL OPERATION
400-800 DEG C CONTINUOUS OPERATION
801-867 DEG C INTERMEDIATE (30 MIN)

ONE ENGINE INOP
867-917 DEG C CONTINGENCY PWR (2.5 MIN)
917-964 DEG C TRANSIENT OPER (12 SEC)

STARTING
867 DEG C MAXIMUM

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13
Q

NG LIMITS

A

0-102.1% CONTINUOUS OPERATION

  1. 1-105.1% TRANSIENT (12 SEC)
  2. 2% MAXIMUM
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14
Q

ENGINE OIL TEMP/PRESS

A

TEMP
35-131 DEG C CONTINUOUS OPERATION
132-149 DEG C 30 MINUTE OPERATION
150 DEG C MAXIMUM

PRESS
20 PSI MINIMUM
20-30 PSI CAUTION
30-100 PSI CONTINUOUS OPERATION
100 PSI MAXIMUM
200 PSI COLD START LIMIT
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15
Q

MRGB OIL TEMP/PRESS

A 
TEMP
-50 TO 0 DEG CAUTION
0-100 DEG NORMAL
100-110 DEG CAUTION
110 DEG MAXIMUM
PRESS
25 PSI MINIMUM
25-40 PSI CAUTION
40-70 PSI NORMAL
70-100 PSI CAUTION
100 PSI MAXIMUM
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16
Q

IGB OIL TEMP/PRESS

A

TEMP
-50 TO 0 DEG CAUTION
0-124 DEG NORMAL
129 DEG MAXIMUM

PRESS
LO LOW
GO NORMAL (>7 PSI)

17
Q

CBOX OIL TEMP/PRESS

A 
TEMP
-50 TO 0 DEG CAUTION
0-100 DEG NORMAL
100-110 DEG CAUTION
110 DEG MAXIMUM
PRESS
25 PSI MINIMUM
25-70 PSI CAUTION
70-90 PSI NORMAL
90-150 PSI CAUTION
151 PSI MAXIMUM
18
Q

TRGB OIL TEMP/PRESS

A 
TEMP
-50 TO 0 DEG CAUTION
0-100 DEG NORMAL
100-110 DEG CAUTION
110 DEG MAXIMUM
PRESS
LO     MINIMUM (175 PSI)
19
Q

HYDRAULICS

A 
TEMP
-7 DEG     MINIMUM
-7 TO 10 DEG CAUTION
10-110 DEG    NORMAL
110-115 DEG CAUTION
115 DEG MAXIMUM
PRESS
2000 PSI MINIMUM
2001-2700 PSI CAUTION
2700-3150 PSI NORMAL
3150-3800 PSI CAUTION
3850 PSI MAXIMUM

LEVEL
LOW (75 CU IN) MINIMUM
REFL (75-85 CU IN) CAUTION
FULL (85-110 CU IN)

20
Q

GENERATOR

A 
VOLTAGE
18 VDC MINIMUM
18-22 VDC CAUTION RANGE
22-29 VDC NORMAL
29-30 VDC CAUTION
30 VDC MAXIMUM

AMPERAGE
0-400 AMPS NORMAL
400-600 AMPS CAUTION RANGE
600 AMPS MAXIMUM

21
Q

BATTERY

A 
VOLTAGE
18 VDC MINIMUM
18-22 VDC CAUTION RANGE
22-29 VDC NORMAL
29-30 VDC CAUTION
30 VDC MAXIMUM
22
Q

APU GENERATOR

A 
VOLTAGE
0-17.9 VDC LOW
18-21.9 VDC AVOID RANGE
22-29 VDC NORMAL
29.1-29.9 VDC AVOID
30 VDC HIGH

AMPERAGE
0-200 AMPS NORMAL
200.1-299 AMPS AVOID
300-400 AMPS HIGH

23
Q

ESTL/NON ESTL DC BUS

A 
VOLTAGE
18 VDC MINIMUM
18-22 VDC CAUTION RANGE
22-29 VDC NORMAL
29-30 VDC CAUTION
30 VDC MAXIMUM
24
Q

ESTL/NON ESTL AC BUS

A 
104 VAC MINIMUM
104-108 VAC CAUTION
108-118 VAC NORMAL
118-125 VAC CAUTION
125 VAC MAXIMUM
25
Q

ROTOR BRAKE LIMITATIONS

A
  1. Do not apply rotor brake above 60 percent Nr.
  2. Do not apply rotor brake below 25 percent Nr.
  3. Release the rotor brake prior to 0 percent Nr to avoid sudden stoppage.
  4. During rotor brake start, release brake within 25 seconds after 67 percent Ng is attained.
  5. During rotor brake start, ROTOR BRAKE light should extinguish within 30 seconds after brake release.
  6. Do not exceed engine idle rpm (67 ±3 percent Ng) with rotor brake engaged.
26
Q

LANDING GEAR LIMITATIONS

A

Landing is permitted at maximum gross weight for all headings on sloped surfaces up to and including six degrees

27
Q

Maximum Airspeed Limitation

A

The maximum airspeed limits (VNE) are:

  1. Below 10,000 feet density altitude (DA) — 200 KIAS.
  2. Above 10,000 feet DA — 100 KIAS.

Other maximum airspeed limits are:

  1. Autorotation — 120 KIAS.
  2. Sideward/rearward flight — 45 KIAS.
  3. SCAS failure — 100 KIAS.
28
Q

Altitude Limitations

A

The maximum operational altitude is 10,000 feet pressure altitude

29
Q

MANEUVERING LIMITATIONS

A

Operations above 10,000 feet DA — Roll limit of 30º.
Acceleration limits-Acceleration cueing is provided by the G meter and cyclic stick buzzer
at 2.5 g’s.

30
Q

Prohibited Maneuvers

A
  1. Aerobatic maneuvers as defined by OPNAVINST 3710.7.
  2. Practice autorotations to touchdown are prohibited.
  3. Practice autorotation entries within the shaded areas of the height velocity diagrams are prohibited.
  4. Dual-engine throttle chops above 120 KIAS are prohibited.
  5. Single-engine throttle chops above 60-percent MRGB torque are prohibited.
  6. Do not exceed 50-percent MRGB torque at airspeeds above Vh while in a dive.
  7. Abrupt, simultaneous collective and cyclic inputs while maneuvering are prohibited.
31
Q

WEIGHT LIMITATIONS

A

Maximum gross weight of helicopter is 18,500 pounds.

32
Q

GROUND HANDLING LIMITATIONS

A
  1. Maximum jacking weight is 14,000 pounds.

2. Maximum towing weight is 18,500 pounds.

33
Q

PROHIBITED OPERATIONS

A

Gravity fueling with engines and/or APU operating is prohibited.
No flight shall be planned to terminate with a fuel state less than 300 pounds.
Except for emergencies, intentional in−flight operation with HYD 1 or HYD 2 PBA selected to OFF is prohibited.

34
Q

Blade Fold or Spread Limits

A

Blades should not be folded or spread in winds over 45 knots, from any direction

35
Q

AIRCREW LIMITATIONS

A

Avoid placing metallic objects, electrical conducting materials, or electronic gear within 400−mm (15.75−inch)
magnetic zone of influence located around magnetic head trackers and helmet receivers

AH1Z (2 decks)

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