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Bell 206 Chair Flying > Emergencies > Flashcards

Emergencies Flashcards

1
Q

Engine Fire
- indications
- during start/shutdown
- in flight

A
  • HIGH TOT during start/shutdown, visible smoke/fumes/fire.

DURING START/SHUTDOWN: [THROTTLE]-close, [FUEL VALVE]-off, [STARTER]-motor until TOT normal. Shutdown and exit helicopter.

IN FLIGHT: THROTTLE-close, enter autorotation. If time before landing: [FUEL VALVE] [BATT] [GEN]-all off

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2
Q

Engine Failure
- indications
- HIGE
- In cruise
- In flight relighting

A
  • LEFT yaw, ENG OUT + audio when N1<55%, ROTOR LOW + audio when NR<90%, instruments indicate power loss

HIGE: Maintain heading and attitude. Adjust collective to control rate of descent and cushion landing. NR >70% recommended for landing. Shutdown.

IN CRUISE: Maintain heading and attitude. Adjust collective NR 90-107%. Adjust cyclic 70mph (61kts). Rate of descent range  60-80mph (52-69kts). Attempt relight if sufficient altitude. At low altitude: Close throttle, [FUEL VALVE]-off. Increase collective as flare effect decreases to further reduce forward speed and cushion landing. NR >70% recommended for landing. Shutdown.

IN FLIGHT RELIGHTING: DO NOT ATTEMPT IF METALLIC OR GRINDING SOUNDS PRESENT. Adjust collective NR 90-107%. Close throttle. Adjust airspeed 60mph (52kts). [FUEL VALVE]-on, engage STARTER. Modulate if N1<30%. Bring throttle to idle, monitor TOT 716-768, open throttle fully. If unsuccessful: close throttle, [FUEL VALVE]-off, autorotation.

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3
Q

Engine Overspeed
- indications
- how to tell which is the failure
- procedure

A
  • NR, N2, N1 and TQ increase.
  • If N1 controllable with throttle: governor or N2 section failure
  • If N1 and N2 uncontrollable with throttle: fuel control or N1 section failure
  • If ENG OIL PRESSURE decreases rapidly: N1 section failure

Reduce throttle and stabilize N1 and N2. Monitor TOT. Adjust collective NR 90-107%. Adjust cyclic to desired airspeed. Prepare for power off landing if NR and TOT cannot be maintained.

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4
Q

Engine Underspeed
- indications
- procedure

A
  • N1 decrease followed by N2, TQ, and possibly NR decrease.

Adjust collective NR 90-107%. Bring throttle to idle. Establish autorotative glide. Prepare for power off landing.

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5
Q

Compressor Stall
- indications
- low intensity
- high intensity

A

– Engine pops, high/erratic TOT, decreasing/erratic N1 or N2, TQ oscillation.

LOW INTENSITY: Reduce collective, maintain slow cruise. Monitor TOT and N1. [ENG ANTI-ICE]-off. Slowly increase collective and continue flight. LAND AS SOON AS PRACTICAL.

HIGH INTENSITY: perform engine failure autorotation.

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6
Q

ENG Oil pressure - Low, High or Fluctuating

A

If <min>max: LAND ASAP</min>

If fluctuating within normal range: monitor ENG OIL press and temp. LAND AS SOON AS PRACTICAL.

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7
Q

ENG Oil Temp HIGH

A

LAND ASAP

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8
Q

Hydraulic Failure
- Indications
- Procedure

A

– Grinding or howling noise from pump, increased force in controls

Reduce airspeed 70-80mph (61-69kts). Pull [HYDR SYSTEM] Circuit Breaker. If power not restored push back in. [HYDRAULIC SYSTEM]-on. If power not restored- off. LAND AS SOON AS PRACTICAL. Run-on landing 10mph (9 kts) recommended.

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9
Q

Tail Rotor Failures
Complete Loss of Thrust
- Indications
- in Hover
- in Flight

A

– uncontrollable RIGHT yaw, nose down tucking, roll of fuselage

HOVER: Chop throttle and autorotate. Slight rotation on landing expected.

IN FLIGHT: Reduce throttle to idle. Enter autorotation. Maintain airspeed 60mph (52kts).

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10
Q

Tail Rotor Failures
Fixed Pitch Failures
- Indications
- in Hover
- Left stuck pedal
- Right stuck pedal

A

– lack of directional response, locked pedals

HOVER: Do not chop throttle unless severe. Manage yaw and land.

LEFT STUCK PEDAL: High powered condition. Steep, high powered, low airspeed approach with left sideslip (wind off left if possible). Decrease in NR also decreases TR thrust. Increase collective before touchdown to correct nose right.

RIGHT STUCK PEDAL: Reduced powered condition. Shallow, low powered, run-on type landing. Gradually reduce throttle to maintain heading while adding collective to cushion landing. IF right yaw becomes excessive, roll off throttle completely.

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11
Q

Generator Failure
- Indicators
- Procedure

A
  • GEN FAIL caution light and DC loadmeter 0%

Check [GEN FIELD] and [GEN RESET] circuit breakers are in. Place [GEN] to RESET and then return. If power not restored, place [GEN] to off. LAND AS SOON AS PRACTICAL.

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12
Q

Excessive Electrical Load
- Indicators
- Procedure
- How long will battery operate left boost pump with all electrical equipment off?

A

– DC loadmeter shows excessive loads, smoke/fumes

Turn off [GEN] and [BATT]. Check [LEFT FUEL BOOST] circuit breaker is in. Reduce altitude to below 6000’. 160 lbs unusable fuel. LAND AS SOON AS PRACTICAL.

  • With all electrical equipment off, 80% battery charge will operate left boost pump ~3 hrs to transfer fuel from forward cell and maintain helicopter within CG.
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13
Q

How many Warning Lights are there? (RED)
- cause of each
- procedure for each

A
  1. ENG OUT + intermittent audio
    - N1 < 55 ± 3% RPM
    - Verify engine condition. Follow ENG FAILURE procedure
  2. BATTERY HOT
    - Batt Temp > 60C
    - [BATT]-OFF. LAND AS SOON AS PRACTICAL.
    If BATTERY RLY comes on, LAND ASAP.
  3. LITTER DOOR OPEN
    - Litter door not securely attached
    - If light illuminates during flight, LAND AS SOON AS PRACTICAL.
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14
Q

How many Caution Lights are there? (YELLOW)
- cause of each
- procedure for each

A
  1. ROTOR LOW + steady audio
    - NR < 90% RPM
    - Reduce collective pitch. Ensure throttle full open.
  2. TRANS OIL PRESS
    - XMSN OIL pressure below min
    - Reduce power. Verify fault with gauge. LAND ASAP.
  3. TRANS OIL TEMP
    - XMSN OIL temp above max
    - Reduce power. Verify fault with gauge. LAND ASAP.
  4. BATTERY RLY
    - Batt relay closed with [BATT]-OFF. Batt will not drop off line.
    - If BATTERY HOT is on, LAND ASAP.
  5. FUEL LOW
    - ~50–75 lbs fuel remain
    - Verify fuel quantity. LAND AS SOON AS PRACTICAL.
  6. ENG CHIP
    - Metallic particles in engine oil
    - LAND ASAP.
  7. TRANS CHIP
    - Metallic particles in transmission oil
    - LAND ASAP.
  8. FUEL FILTER
    - A/F fuel filter clogged
    - LAND ASAP. Clean before next flight.
  9. T/R CHIP
    - Metallic particles in T/R gearbox oil
    - LAND ASAP.
  10. GEN FAIL
    - Generator failure
    - [GEN]-RESET then ON. If light still on, [GEN]-OFF. LAND AS SOON AS PRACTICAL.
    Descend below 6000’ in case boost pumps fail
  11. R/FUEL PUMP
    - Right pump of dual boost pump assembly failed
    - Descend below 6000’ if possible. LAND AS SOON AS PRACTICAL.
    - 160 lbs unusable fuel if both pumps fail.
  12. L/FUEL PUMP
    - Left pump of dual boost pump assembly failed
    - Descend below 6000’ if possible. LAND AS SOON AS PRACTICAL.
    - 160 lbs unusable fuel if both pumps fail.
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Bell 206 Chair Flying (5 decks)

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