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OH-58 5&9 > OH-58 5&9 checkride > Flashcards

OH-58 5&9 checkride Flashcards

1
Q

Emergency Shutdown

A

The term EMERGENCY SHUTDOWN is defined as engine shutdown without delay.

  1. Throttle - Close.
  2. FUEL Shutoff Valve Handle - OFF.
  3. BAT switch - OFF. Before turning the battery switch off during in-flight emergencies requiring EMER SHUTDOWN, the pilot should consider a “MAYDAY” call, setting the transponder to EMER, and the possible adverse effects of total electrical failure.

NOTE
Total electrical failure in the OH-58C will result in loss of rotor RPM indications.

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2
Q

Engine Failure at a Hover

A

AUTOROTATE

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3
Q

Engine Failure Low Altitude Low Airspeed or Cruise

A
  1. AUTOROTATE
  2. EMER SHUTDOWN. Accomplish during descent if time permits.
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4
Q

Engine Compressor Stall

A
  1. Collective - Reduce.
  2. ENG DEICE and HTR switches - OFF.
  3. LAND AS SOON AS POSSIBLE.
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5
Q

Engine Overspeed

A
  1. Collective - Increase to load the rotor and sustain engine/rotor RPM below the maximum operating limit.
  2. Throttle - Adjust until normal N2 operating RPM is attained.
  3. _LAND AS SOON AS POSSIBLE._Perform a power-on approach and landing by controlling the RPM manually with throttle.

a. If RPM cannot be controlled manually:

  1. AUTOROTATE when over a safe landing area while simultaneously closing the trottle
  2. EMER SHUTDOWN. Accomplish during descent if time permits.
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6
Q

Engine Underspeed

A

a. If an engine underspeed occurs, the collective must be adjusted downward to maintain rotor RPM within limits. If powered flight with rotor in the green can be accomplished, LAND AS SOON AS POSSIBLE in an area that will permit a run-on landing.
b. An engine underspeed below 94% N2 results in rotor RPM decay below minimum safe limits. Should this occur:

  1. AUTOROTATE.
  2. EMER SHUTDOWN. Accomplish during descent, if time permits.
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7
Q

Hot Start

A

Caution
During engine starts using a Ground Power Unit (GPU), failure of the GPU could possibly result in an engine hot start. After GPU failure during start, the pilot must turn the battery switch on before accomplishing the procedure described below.

  1. Starter switch - Continue to press and hold until TOT is less than 200°C.
  2. Throttle - Close.
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8
Q

Engine/Fuselage/Electrical Fire - Ground.

A

EMER SHUTDOWN

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9
Q

Engine/Fuselage Fire - In Flight

A

a. If Power-On landing:

  1. LAND AS SOON AS POSSIBLE.
  2. EMER SHUTDOWN after landing.

b. If Power-Off landing:

  1. AUTOROTATE.
  2. EMER SHUTDOWN. Accomplish during descent if time permits.
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10
Q
  • Minimum rate of decent- Power Off:_______KIAS @ 100% Rotor.
  • Maximum glide distance-Power Off:_______KIAS @ 100% Rotor.
A
  • Minimum rate of decent- Power Off:__43__KIAS @ 100% Rotor.
  • Maximum glide distance-Power Off:_71-74_KIAS @ 100% Rotor.
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11
Q

Low engine oil pressure and loss of torque indication.

A

LAND AS SOON AS POSSIBLE.

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12
Q

Overheated Battery

A

If high DC amperage does not dissipate:

  1. BAT switch - OFF.

If high DC amperage indication disappears with BAT switch OFF, a high battery charging rate and possible battery thermal runaway is confirmed, in this event:

  1. LAND AS SOON AS POSSIBLE.
  2. EMER SHUTDOWN after landing.

If high DC amperage indication does not dissipate, pilot should anticipate electrical fire in flight.

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13
Q

Engine Surges

A
  1. GOV RPM switch - INCR for maximum RPM.
  2. Throttle - Adjust to 98% N2.
  3. LAND AS SOON AS POSSIBLE.

If engine surges are not controlled in steps 1 and 2
above, proceed as follows:

  1. AUTOROTATE - When over safe landing area.
  2. EMER SHUTDOWN. Accomplish during descent if time permits.
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14
Q

Complete Loss of Tail Rotor Thrust

A

This situation involves a brake in the drive system, such as a severed driveshaft causing the tail rotor to lose power.

  • Powered Flight.
    (1) Indications
  1. Abnormal vibrations
  2. Pedal input has no effect on helikopter trim
  3. Nose of the helicopter turns to the right (left sideslip)
  4. Left roll of the fuselage along the longitudinal axis.

(2) Procedures:

  1. Continue powered flight, if possible, to a suitable landing area at or above minimum rate of decent airspeed.
  2. AUTOROTATE when landing area is reached.
  3. If a run-on landing is possible, complete autorotation with a touchdown airspeed as required for directional control
  4. If a run-on landing is not possible, start to decelerate from about 75 feet altitude, so that forward ground speed is at a minimum when the helicopter reaches 10 to 20 feet. Execute touchdown in a level attitude with minimum ground speed.
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15
Q

Loss of Tail Rotor Effectiveness

A
  1. Pedal - Full Left.
  2. Cyclic - Forward.
  3. As recovery is effected, adjust controls for normal flight.
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16
Q

Main Driveshaft Failure

A
  1. AUTOROTATE - Establish a power-on autorotational glide. The engine must continue to operate at normal operating RPM in order to provide tail rotor control.
  2. EMER SHUTDOWN after landing.
17
Q

AIRSPEED RANGES

A
  1. Refer to speed operating limits chart (figure 5-3) for forward air-speed limits.
  2. Sideward flight limits are 35 knots.
  3. Rearward flight limits are 30 knots.
  4. Recommended maximum indicated airspeed for autorotation is 100 knots.
  5. Maximum indicated airspeed with any door removed is 100 knots.
18
Q

AIRSPEED

A
  • 0-120 KIAS
  • 120 MAX
  • 100 Recommended for Autorotation.
19
Q

TRANSMISSION OIL PRESSURE

A
  • 30 - 60 PSI Normal operation
  • 30 PSI Minimum
  • 70 PSI Maximum
20
Q

ROTOR TACHOMETER

A
  • 93 - 110% Normal Operation
  • 49 - 58% Continuious Operation Prohibited
  • 93% Minimum
  • 110% Maximum
21
Q

ENGINE TACHOMETER (N2)

A
  • 98 -100% Normal Operation
  • 100% Maximum

15 Sec Maximum transient N2 is 110% (Autorotation)

Avoid Steady Sate Conditions Between 78-88% N2

22
Q

TORQUEMETER

A
  • 0 - 85% Normal Operation
  • 85 - 100% 5 Minute Operation
  • 100% Maximum
23
Q

TURBINE OUTLET TEMPERATURE

A

Engine Start:

  • 0ºC to 810ºC Normal
  • Above 810ºC - 927ºC Maximum 10 Seconds
  • 927ºC Maximum 1 Second

Continuous:

  • 300ºC Minimum
  • 300ºC to 738ºC Normal Operation
  • Above 738ºC to 810ºC 30 Minute Limit
  • 810 degrees C Maximum.

Above 810ºC to 843ºC during power transient, 6 secound maximum.

24
Q

ENGINE STARTER LIMITS

A

a. If there is no rise in TOT with in the first 20 seconds of energizing, limit starter energizing time to the following:

External Power
25 seconds - ON
30 seconds - OFF
25 seconds - ON
30 seconds - OFF
25 seconds - ON
30 MINUTES - OFF

Battery
40 seconds - ON
60 seconds - OFF
40 seconds - ON
60 seconds - OFF
40 seconds - ON
30 MINUTES - OFF

b. If there is a rise in TOT within the first 20 seconds of energizing the starter, limit starter energizing time to the following;

EXTERNAL/BATTERY POWER
1 Minute - ON
1 Minute - OFF
1 Minute - ON
1 Minute - OFF
1 Minute - ON
30 Minute - OFF

25
Q

ENGINE STARTING LIMITATIONS

A

During starting if N1 does not reach 58% in a total time of 45 seconds (or 60 seconds below 10ºC FAT), simultaneously, continue to press and hold starter switch until TOT is less than 200 ºC and close throttle.

26
Q

HEALTH INDICATOR TEST (HIT)

A

The HIT is the method by which the aviator in day-to-day flying monitors the aircraft engine condition. This is accomplished by the aviator selecting a N1 speed (%) predicated upon the existing FAT. The TOT must then be compared to a predicted value (Baseline TOT) within a certain tolerance. TOT variation from baseline values are logged by the aviator. This log is a part of the aircraft records and is an aid to the maintenance personnel in monitoring performance trends and in troubleshooting on the engine. When the difference between the recorded TOT and the baseline TOT is +/- 20 ºC or greater, an entry on DA Form 2408-13- 1 will be made to notify maintenance. A difference of +/- 40 ºC or greater is cause for grounding the aircraft.

27
Q

FLIGHT RESTRICTIONS AT LOW “G”s

A

Flight at less than +0.5g is prohibited.

28
Q

BANK AND PITCH LIMITS

A
  • Max bank: 60º
  • Max pitch: +/- 30º
29
Q

ENGINE OIL PRESSURE

A

Note:
Disregard yellow and green instrument markings for engine oil pressure.

  • 50 PSI MINIMUM
  • Idle to 78% N1 50 130 PSI
  • Above 78% to 89% N1 90-130 PSI
  • Above 89% N1 115 - 130 PSI
  • 130 PSI MAXIMUM

Caution:
During cold weather start, maximum may go to 150 PSI, but you must remain at engine idle position until normal limits are attained.

30
Q

ENGINE OIL TEMPERATURE

A
  • 0ºC - 107ºC Continious Operation
  • 107ºC Maximum

Note:
During cold weather operations the engine may be operated at engine oil temperatures down to -50ºC

31
Q

GAS PRODUCER (N1)

A
  • 105% Maximum
  • 62 to 105% Normal Operation

Above 105 to 106% Permissible for 15 seconds.

OH-58 5&9 (1 decks)

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