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MH-60R HAC > Limits > Flashcards

Limits Flashcards

1
Q

If a limit is exceeded to the extent that a red “XXX” is indicated the crew shall __________________.

A

Land as soon as practicable

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2
Q

The engines are limited by what five things?

A

Ng, Np, TGT, oil pressure, and oil temperature

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3
Q

A start cycle is defined as what?

A

Starter initiation, acceleration in Ng, and starter dropout/disengagement.

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4
Q

Operation of the APU shall be limited to essential operations only. Acceptable in-flight use includes:

A
  • Emergency procedures
  • Single-engine training
  • Practice autorotations
  • Powering the ECS during extreme temperature operations.
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5
Q

TGT Limit

A

0-810 — Continuous
810-851 — 30 min.
851-878 — 10 min.
878-903 — 2.5 min.
903-949 — 12 sec.
949 — MAX

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6
Q

Np Limit

A

<96% — AVOID
96-105% — Continuous (yellow > 101%)
105-117% — 20 sec.
117-120% — 12 sec.
120% — MAX

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7
Q

CAUTION: (Np) During engagement, extended operation in the ___ to ___ and ____ to ____ ranges may cause engine damage.

A

20-40% and 60-75%

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8
Q

Nr Limit

A

<96% — AVOID
96-101% — Continuous
101-120% — Precautionary
120% — MAX
123% — MAX for FCF only
127% — Overspeed latch

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9
Q

Dual Engine TQ < 80 KIAS

A

0-120% — Continuous
120-144% — 10 sec.
144% — MAX

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10
Q

Dual Engine TQ > 80 KIAS

A

0-106% — Continuous
106-127% — 10 sec.
127% — MAX

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11
Q

Dual engine torque limits apply when both engines are above _____ torque.

A

65%

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12
Q

Single engine torque limit

A

0-135% — Continuous
135-144% — 10 sec.
144% — MAX

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13
Q

Ng Limit

A

0-102.2% — Continuous
>102.2-106% — 2.5 min.
>106-107% — 12 sec.
107% — MAX

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14
Q

Transmission Temperature Limit

A

-50-105C — Continuous
105-120C — Precautionary
120C — MAX

During any operating condition, no maintenance action is required if main XMSN oil temperature is in the precautionary range for 5 minutes or less.

Prolonged hovering in hot weather 86F (30C) may cause main XMSN oil temperature to rise into the precautionary range. Operation in the precautionary range for less than 30 minutes during any one flight under this condition is acceptable and no maintenance action is required.

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15
Q

Transmission Px Limit

A

20 psi — Minimum
20-30 psi — Idle and transient
30-65 psi (45-60 psi in level flight) — Continuous
65-130 psi — Precautionary
130 psi — MAX

During rotor engagement, a zero oil pressure indication may indicate a no-oil flow condition through the oil lubrication system. Operating with a no oil pressure indication shall be limited to less than 1 minute and shall be documented on a MAF.

During steady state pitch attitudes, XMSN oil pressure should be 45-60 psi. The following conditions do not constitute an immediate emergency situation, but may be indicative of a degraded lubrication system. Any discrepancy shall be documented on a MAF.

  1. Steady px outside of 45-60 psi, but within normal limits of 30-65 psi.
  2. Fluctuations not to exceed a range of 10 psi, within normal limits of 30-65 psi.

During transient pitch or steady-state nose high attitudes, XMSN oil pressure fluctuations (including momentary fluctuations below 30 psi and transient drops below 20 psi for up to 1 second) are acceptable. Operating with pressure fluctuations < 30 psi shall be limited to 30 minutes.

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16
Q

Engine Oil Temperature Limit

A

-50 to 135 C — Continuous
135-150 C — 30 minutes
150 C — MAX

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17
Q

Engine Oil Px Limit

A

22 psi — Minimum
22-26 psi — Precautionary
26-100 psi — Continuous
100-120 psi — Precautionary
120 psi — MAX

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18
Q

Engine Start Limit < 16 C

A

First Cycle — 60 sec.
Second Cycle — 60 sec.
Third Cycle — 60 sec.
Fourth Cycle — 30 minutes

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19
Q

Engine Start Limit 16-52 C

A

First Cycle — 60 sec.
Second Cycle — 30 minutes

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20
Q

Engine Motor (Ignition Off)

A

At any temperature…
Starter engaged 2 minutes, disengaged for 5 minutes
Starter engaged 2 minutes, disengaged for 30 minutes

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21
Q

The transmission is limited by what four things?

A

Nr, torque, oil pressure, and oil temperature

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22
Q

Max wind velocity for rotor engagement or disengagement.

A

45 knots in any direction

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23
Q

Max airspeed (Vne)

A

180 KIAS

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24
Q

Max airspeed sideward/rearward flight.

A

35 KIAS

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25
Q

Max autorotation airspeed.

A

100 KIAS

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26
Q

Max Boost Off airspeed.

A

140 KIAS

27
Q

Max SAS 1 and SAS 2 inop in IMC airspeed limit.

A

125 KIAS

28
Q

Either PRI SERVO PRESS caution max airspeed.

A

125 KIAS

29
Q

Searchlight in a fixed position other than stowed max airspeed.

A

160 KIAS

30
Q

Searchlight in transition max airspeed.

A

100 KIAS

31
Q

Dome at or above trail (cable extended 10 ft. Dome approx. 6 ‘ below aircraft) max airspeed and AOB limit.

A

70 KIAS, 45 AOB

32
Q

Dome below trail max airspeed and AOB limit.

A

70 KIAS, 15 AOB

33
Q

Cabin door opening/closing airspeed limit.

A

60 KIAS

34
Q

Max rate of descent for rescue hoist loads.

A

1000 fpm

35
Q

Name the four hovering limitations.

A
  1. Prolonged rearward flight and downward hovering should be avoided to prevent accumulation of exhaust fumes in the helicopter and heat damage to the window on an open cabin door.
  2. Hovering turns at a rate in excess of 30 degrees per second.
  3. Dipping sonar operations at altitudes other than 70’.
  4. Do not tow the transducer in the water above 8 KGS with array folded and 4 KGS with the array unfolded.
36
Q

Name the 4 bank angle limitations.

A
  1. Normal operations — 45 deg.
  2. Operations above 10,000’ DA — 30 deg.
  3. Either PRI SERVO PRESS caution — 30 deg.
  4. Boost off flight — 30 deg.
37
Q

Maximum operating density altitude is _________.

A

13,000’

38
Q

Name the three prohibited maneuvers.

A
  1. Aerobatic flight
  2. Practice full-autorotation landings
  3. Intentional approaches into or inducement of retreating blade stall
39
Q

Maximum rotor speed for rotor brake application is ______% Nr. Routine rotor stops shall be made between _____ and _____% Nr. Routine rotor brake stops should be limited to _____ psi to extend service life.

A

76%, 30-50%, 180 psi

40
Q

Max wind velocity for blade fold/spread and tail pylon or stabilator fold/spread.

A

45 knots from any direction

41
Q

Cooling period following a complete blade fold and spread cycle.

A

10 minutes

42
Q

Max rate of descent for level terrain shall not exceed _____fpm for gross weight less than 19,500 lbs and _____ for gross weight above 19,500 lbs.

A

720 fpm, 480 fpm

43
Q

Max rate of descent for sloped terrain shall not exceed ______ fpm.

A

360 fpm

44
Q

Max touchdown speed shall not exceed ______ with tailwheel locked and ______ with the tailwheel unlocked.

A

75 KGS, 20 KGS

45
Q

Max ground taxi speed is ______. If the shimmy damper is not installed or inoperative, max ground taxi speed is ______.

A

40 KGS, 20 KGS

46
Q

Slope landing limitations.

A

9 deg. Nose-up
12 deg. Cross-slope
6 deg. Nose-down

47
Q

Max operating gross weight.
Max launch and recovery gross weight for aviation and amphibious assault ships.
Max “ “ for air-capable ships.

A

23,500 lbs.
23,500 lbs.
22,500 lbs.

48
Q

Max cargo floor loading is ______ per square foot.

A

300

49
Q

Max weight that may be suspended from the cargo hook is _______. Max weight that may be suspended from the rescue hoist is ______.

A

6,000 lbs.
600 lbs.

50
Q

At max gross weight, the lateral cg limits are ______ right and ______ left.

A

8.0 inches
7.5 inches

51
Q

Minimum aircraft equipment for night flight over water.

A
  1. LAWS
  2. Altitude hold (RADALT or BARALT)
52
Q

Helicopters equipped with operable anti-ice and blade de-ice equipment are permitted flight into forecast or known ______ or ______ icing conditions.

A

Trace or light

53
Q

Flight into known icing conditions without de-ice equipment is __________.

A

Prohibited

54
Q

Flight into forecasted or known ________ or ________ icing conditions is prohibited.

A

Moderate or severe

55
Q

Except in emergency situations, what shall be operational for all overwater flights requiring passengers/non-aircrew in the cabin?

A

Helicopter emergency egress lighting system (ADHEELS and IHEELS)

56
Q

Temperature limit

A

Operations at temperatures below -40 C or above 60 C are prohibited.

57
Q

APU operation at ambient temperatures of ______ and above with engine and rotor operating is limited to ________.

A

43 C, 30 minutes

58
Q

With engines and rotors not operating, APU may be operated continuously up to an ambient temperature of _______.

A

51 C

59
Q

Backup hydraulic pump limits.

A

33-38 C — operating time 24 minutes, cool down time 72 minutes
39-60 C — operating time 16 minutes, cool down time 48 minutes

60
Q

XMSN Temp Limit: During any operating condition

A

During any operating condition, no maintenance action is required if main XMSN oil temperature is in the precautionary range for 5 minutes or less.

61
Q

XMSN Temperature Limit: Prolonged Hovering

A

Prolonged hovering in hot weather 86F (30C) may cause main XMSN oil temperature to rise into the precautionary range. Operation in the precautionary range for less than 30 minutes during any one flight under this condition is acceptable and no maintenance action is required.

62
Q

Transmission Px Limit: During steady state pitch attitudes

A

During steady state pitch attitudes, XMSN oil pressure should be 45-60 psi. The following conditions do not constitute an immediate emergency situation, but may be indicative of a degraded lubrication system. Any discrepancy shall be documented on a MAF.

  1. Steady px fluctuations outside of 45-60 psi, but within normal limits of 30-65 psi.
  2. Fluctuations not to exceed a range of 10 psi, within normal limits of 30-65 psi.
63
Q

Transmission PX Limit: During transient pitch or steady-state nose high attitudes

A

During transient pitch or steady-state nose high attitudes, XMSN oil pressure fluctuations (including momentary fluctuations below 30 psi and transient drops below 20 psi for up to 1 second) are acceptable. Operating with pressure fluctuations < 30 psi shall be limited to 30 minutes.

64
Q

Transmission PX Limit: during rotor engagement

A

During rotor engagement, a zero oil pressure indication may indicate a no-oil flow condition through the oil lubrication system. Operating with a no oil pressure indication shall be limited to less than 1 minute and shall be documented on a MAF.

MH-60R HAC (26 decks)

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