206 L3 EP's Flashcards

Question

Engine Oil Pressure Low, High, or Fluctuating

Answer 1

If engine oil pressure is below minimum or above maximum, Land ASAPo. If engine oil pressure fluctuates but does not exceed a limit, monitor engine oil pressure and temp and Land ASAPr.

Answer 2

Land ASAPo.

Answer 3

Indications: 1. Grinding or howling noise from pump. 2. Increase in force to move flight controls. 3. Feedback forces may be evident during flight control movement. 4. Cyclic and collective movements are rate limited. Procedure: 1. Reduce AIRSPEED to 61 to 69 KIAS (70 to 60 MPH). 2. HYDR SYSTEM circuit breaker - Out. If power not restored, push breaker in. 3. HYDRAULIC SYSTEM switch - ON; OFF if power not restored. 4. Land as soon as practical. 5. A run-on landing at approximately 9 KIAS (10 MPH) is recommended.

Answer 4

There is no single emergency procedure for all types of antitorque malfunctions. The key to successful handling of a tail rotor emergency lies in the pilot’s ability to quickly recognize the type of malfunction that has occurred.

Answer 5

This is a situation involving a break in the drive system (e.g., severed driveshaft), wherein the tail rotor stops turning and delivers no thrust. Indications: 1. Uncontrollable yawing to the right (left side slip). 2. Nose down tucking. 3. Possible roll of the fuselage. **_Note_** The severity of the initial reaction of the helicopter will be affected by A/S, cabin loading, C of G, power being used, and density altitude. Procedure: Hovering - Chop throttle and perform a hovering autorotation. A slight rotation can be expected on touchdown. In-flight - Reduce throttle to idle, immediately enter autorotation, and maintain a minimum A/S of 52 KIAS during descent. **_Note_** The large vertical fin may permit controlled flight at low power levels and sufficient A/S when a suitable landing site is not available. During the final stages of the approach, a mild flare should be executed, making sure that all power to rotor is off. Maintain helicopter in a slight flare and smoothly use collective to execute a soft, slightly nose-high landing. Landing on aft portion of skids will tend to correct side drift. This technique will, in most cases, result in a run-on type landing. **_Caution_** IN A RUN-ON TYPE LANDING AFTER TOUCHING DOWN, DO NOT USE CYCLIC TO REDUCE FORWARD SPEED.

Answer 6

This is a situation involving the inability to change the tail rotor thrust (blade angle) with the pedals due to a mechanical problem with the anti-torque system. Indications: 1. Lack of directional response. 2. Locked pedals. **_NOTE_** If the pedals cannot be moved with a moderate amount of force, do not attempt to apply a maximum effort, since a more serious malfunction condition could result. If the helicopter is in a trimmed condition when the malfunction is discovered, the TRQ and A/S should be noted and the aircraft flown to a suitable landing area. Combinations of TORQUE, ROTOR RPM, and AIRSPEED will correct or aggravate a yaw attitude, and these are what will be used to land the helicopter. Procedure: HOVERING Do not chop throttle unless a severe right yaw occurs. If pedals lock in any position at a hover, landing from a hover can be accomplished with greater safety under power-controlled flight rather than by chopping throttle and entering autorotation. IN-FLIGHT - LEFT PEDAL APPLIED In a high power condition, the helicopter will yaw to the left when power is reduced. Power and AIRSPEED should be adjusted to a value where a comfortable yaw angle can be maintained. If AIRSPEED is increased, the vertical fin will become more effective and an increased left yaw attitude will develop. To accomplish landing, establish a power-on approach with sufficiently low AIRSPEED (zero if necessary) to attain a rate of descent with a comfortable sideslip angle. (A decrease in N2 RPM decreases tail rotor thrust.) As collective is increased just before touchdown, left yaw will be reduced. IN-FLIGHT - RIGHT PEDAL APPLIED In cruise flight or reduced power situation, the helicopter will yaw to the right when power is increased. A low power run-on type landing will be necessary by gradually reducing throttle to maintain heading while adding collective to cushion the landing. If right yaw becomes excessive, roll off the throttle completely.

Answer 7

Indications: 1. GEN FAIL caution light illuminated. 2. DC loadmeter indicates 0% LOAD. Procedure: 1. Check GEN FIELD and GEN RESET circuit breakers in. 2. Place GEN switch to RESET position, then return to GEN position. 3. If power not restored, place GEN switch to OFF; land as soon as practical.

Answer 8

Indications: 1. DC loadmeter indicates excessive loads. 2. Smoke or fumes. Procedure: 1. GEN switch - OFF 2. Bat switch - OFF 3. LEFT FUEL BOOST circuit breaker - Check in. **_Warning_** Altitude must be reduced below 6,000' PA prior to battery depletion. Unusable fuel may be as high as 160 lbs after battery is depleted due to inability to transfer fuel from the forward cells. **_Note_** With all electrical equipment OFF, the battery, when 60% charged, will operate the left fuel boost pump approximately 3 hours to transfer fuel from the forward fuel cells and maintain the helicopter within CG limits. For night operation, approximately one hour of battery power will be available. 4. Land ASAPr

Answer 9

Applicable to helicopters equipped with FUEL QTY switch. A fuel transfer failure will result in trapped fuel in the forward cells and reduce usable fuel by the amount remaining in the forward cells. Indications: At total FUEL QTY of approximately 407 lbs and below, FUEL QTY in forward cells remains constant. Procedure: 1. Determine FUEL QTY in forward cell. 2. Subtract quantity of fuel trapped in forward cells from total to determine usable fuel remaining. 3. Plan landing accordingly.