EP's Flashcards
Fuel Control Stuck at minimum flow (Rollback)
- Condition Lever - Increase full RPM
- EPL - advance to desired power setting
WARNING:
A generator which fails with extreme heat could possibly lead to a loss of useful power situtation in whiche the EPL may not be effective. The close proximity of the generator to the FCU can cause the fuel within the FCU to vapor-lock, inhibiting fuel flow through the FCU.
CAUTION:
Binding of the EPL cable may occur when the aircraft is operated in freezing temperatures.
NOTE:
When using EPL maintain N1 above 65% to improve engine response and ensure generator stays online.
If resultant power available is insufficient for a PEL:
- EPL - disconnect
- Engine Failure - Execute
WARNING:
when the engine is so underpowered that high rates of decent occur, any delay in feathering the prop may result in insufficient altitude to reach a suitable landing site. It is not recommended to delay feathering the propeller in the landing configuration below landing pattern altitude.
NOTE:
If resultant power is sufficient to maintain a rate of descent less than the featherd condition (600-800 fpm clean) consideration should be given to allowing the engine to operate until the field is made.
if sufficient power is restored:
- PCL - idle
- PEL - Execute
CAUTION:
Use of BETA is not recommended when performing a landing using the manual fuel control system. If the use of BETA is required, ensure the EPL is in the IDLE range or DISCONNECT before selecting BETA with the PCL.
Compressor Stall
- PCL - slowly retard to just below stall threshold to clear stall
- Cockpit Environmental Control - FULL FORWARD
WARNING:
Avoid unnecessary PCL movement. Advancing the PCL may result in further compressor stalls and engine flameout. Retarding the PCL further may limit maximum power available.
- PCL - SLOWLY ADVANCE (as required)
- If the resultant power available is insufficient to exectue a PEL:*
- ENGINE FAILURE - Execute
- If sufficient power is available:*
- PEL - EXECUTE
- WARNING:*
Use of manual fuel control will only aggravate compressor stalls and could lead to flameout.
WARNING:
when the engine is so underpowered that high rates of descent occur, any delay in feathering the propeller may result in insufficient altitude to reach a suitable landing site.
NOTE:
- If the situtation permits, record the altitude, OAT, max ITT and duration of compressor stall.
- If resultant power is sufficient to maintain a ROD less than feathered condition (600-800fpm clean), consideration should be given to allwing the engine to operate until the field is made.
Engine Failure
*1. Flying speed ………. Maintain (100 KIAS minimum)
*2. Landing gear and flaps ……….. Up
*3. Engine instruments ………. Check
WARNING:
If N and ITT indicate a rollback condition (FCU stuck at minimum flow), execute the ₁ FUEL CONTROL STUCK AT MINIMUM FLOW (ROLLBACK) procedure. If application of power results in compressor stalls (possible compressor bleed valve malfunction/failure), execute COMPRESSOR STALLS procedure.
*4. Condition lever ………. Feather (as required)
*5. Landing site ………. Select
*6. Harness ……….. Locked
*7. Air start ……….. Perform (if situation permits)
If air start is not attempted or is unsuccessful:
*8. No landing site available and altitude permits ………. Bail out
If forced landing/ditch is to be continued:
*9. Emergency engine shut down ………. Execute
*10. MAYDAY/7700 ………. Broadcast
*11. ELP ………. Intercept
*12. Gear and flaps ………. Emergency open
Note:
Dirt and loose objects propelled by the sir-blast may restrict visibility.
*14. Battery switch ………. Off
Note:
Consideration should be given to leaving the battery on at night.
AIR START
*1. PCL ………. Idle
*2. Emergency fuel shut off handle ………. Down
*3. Standby fuel pump switch ………. On
*4. Starter ………. On
*5. N and ITT ………. Monitor for start indications
*6. Starter ………. Off (when ITT peaks or no indications of start)
*7. Standby fuel pump ………. Off (if start unsuccessful)
Note:
If an air start is attempted and unsuccessful, sufficient battery power may not be available to lower the flaps or gear electrically.
I**f start is successful:
*8. Condition lever ………. Full INCR
*9. PCL ………. Advance (as required)
*10. PEL ……….. Execute
*11. Auto ignition ………. On
UNCONTROLLABLE HIGH POWER
The bearings or shaft in the FCU could fail without prior fluctuations, causing fuel flow to go to maximum, resulting in a very high-power condition that will be unresponsive to PCL movements. If torque, N , and fuel flow go to maximum and the engine is unresponsive to PCL movements, proceed as follows:
*1. PEL ………. Execute
Warning:
Certain failures can cause wide power surges from maximum to as low as minimum fuel flow. Engagement of the EPL in this case will have no effect on the high end of the power fluctuations, but may raise the low end of the surges, thus reducing the magnitude of the fluctuations.
- Friction lock know ………. Full decrease
- Condition lever ………. Rapidly retard to fuel off
Caution:
When retarding the condition lever, do not hesitate in the FEATHER detent because high power from the engine with the propeller in FEATHER may cause severe airframe vibration and very high torque applied to the propeller and reduction gear box.
Note:
Altitude permitting, the pilot may elect to shut down the engine with the emergency fuel shut off handle. The engine may continue running for as long as 30 seconds after the handle is pulled.
- Engine failure ………. Execute
ENGINE FIRE IN FLIGHT
*1. Fire ………. Confirm
If fire is confirmed:
*2. Emergency engine shut down ………. Execute
*3. Cockpit environmental control/aft cockpit outside air ………. Off
Note:
Under varying conditions of altitude, fire, smoke, or fumes, the pilot has the option of using 100% oxygen, opening canopy, and/or closing the oxygen cylinder valve as directed by judgment.
If fire persists:
*4. Bail out ………. Execute
If fire extinguishes:
*5. Engine failure ………. Execute
If no fire indications:
*6. PEL ………. Execute
ELECTRICAL/UNKNOWN ORIGIN FIRE
FIRE - Attempt to locate/isolate source of fire/flames. If unsuccessful, continue:
VMC
IMC
ELECTRICAL/UNKNOWN ORIGIN FIRE
VISUAL METEOROLOGICAL CONDITIONS
Attempt to locate/isolate source of fire/flames. If unsuccessful, continue:
VISUAL METEOROLOGICAL CONDITIONS
*1. Battery and generator switches ………. Off
*2. 100% oxygen ………. Don (as required)
*3. Airspeed ………. Reduce (as required)
Note:
Under varying conditions of altitude, fire, smoke, or fumes, the pilot has the option of using 100% oxygen, opening canopy, and/or closing the oxygen cylinder valve as dictated by judgment.
*4. Cockpit environmental control/aft cockpit outside air ………. Off
If fire persists:
*5. Engine fire ………. Execute
If fire extinguishes:
*6. Land as soon as possible.
*7. Restoring electrical power ………. Execute (as required)
Note:
Should the pilot elect to initiate an emergency landing with electrical power secured, additional consideration should be given to the landing approach; allow additional time to hand crank the landing gear down and plan for a no-flap landing with maximum runway length, since BETA will not be available
ELECTRICAL/UNKNOWN ORIGIN FIRE
INSTRUMENT METEOROLOGICAL CONDITIONS
FIRE Attempt to locate/isolate source of fire/flames.
*1. Utility bus switches ………. Off
Note:
The following items will be lost when securing the utility bus switches: Oil pressure and temperature, flap power and position indicator, RMI compass and cards, NACWS CDUs and TRC, transponder, VOR, TACAN, GPS, fuel quantity, BETA release, utility lights, console lights, console flood lights, instrument flood lights, vent blowers, scavenge pump, prop test, condenser blower, AC clutch, and avionics cooling fan.
*2. All other non-essential equipment ………. Off
*3. 100% oxygen ………. DON (as required)
*4. Air speed ………. Reduce (as required)
Note:
Under varying conditions of altitude, fire, smoke or fumes, the pilot has the option of using 100% oxygen, opening canopy, and/or closing the oxygen cylinder valve as dictated by judgment.
*5. Cockpit environmental control/aft cockpit outside air ………. Off If fire persists:
*6. Bail out (altitude permitting). If fire extinguishes:
*7. Land as soon as possible.
Note:
If landing with utility bus switches secured, additional consideration should be given to the landing approach. Plan for a no-flap landing using maximum runway length since BETA will not be available.
SMOKE OR FUME ELIMINATION
Warning:
Prior to accomplishing any procedure that will crate a draft in the cockpit, determine the source of smoke. A sudden draft may cause a smoldering fire to burst into flame.
*1. 100% oxygen ………. DON
*2. Airspeed ………. Reduce (as required)
*3. Cockpit environmental control/aft cockpit outside air ………. Fresh air increase/on
If smoke or fumes remain, obstructing sight for landing or heat build-up requires ventilation:
*4. Canopy ………. Emergency open
Note:
Due to the stability of jet fuel, the risk of igniting fuel or fuel fumes from electrically lowering the landing gear or flaps is extremely remote. If the pilot elects to lower the gear manually, execute landing gear emergency extension procedure.
BLEED AIR WARNING LIGHT
- Cockpit environmental control lever ………. Fresh air increase
Note:
If the light remains illuminated with cool air coming out of the fresh air ducts, the warning light is giving a false indication.
- If the light remains illuminated with hot air coming out of the fresh air ducts, land as soon as practical using normal procedures.
IN-FLIGHT DAMAGE/BINDING CONTROLS
If the aircraft damage is sustained because of mid-air collision, bird strike, or over-stress, the single most important concern is maintaining or regaining aircraft control. If the aircraft is controllable, monitor engine instruments for unusual indications and flight controls for free and correct response. Existing conditions may warrant consideration of an airborne visual check.
*1. Maintain control of aircraft; if not controllable, BAIL OUT.
*2. Climb ………. As required
*3. Check flight characteristics above 5000 feet AGL in the landing configuration, decreasing airspeed in increments of 10 KIAS to an airspeed at which a safe landing can be made (no slower than 80 KIAS.
Warning:
Because of unknown flight characteristics of a damaged aircraft, a stall may result in uncontrolled flight from which recovery is impossible. If out-of-control flight occurs, immediately execute OUT-OF-CONTROL RECOVERY procedures. If recovery does not appear imminent and/or cannot be accomplished by 5000 feet AGL, BAIL OUT.
- Fly a wide or straight-in approach and land as soon as possible.
WIND SHEAR/WAKE TURBULENCE ESCAPE PROCEDURES
*1. Wave off ……….. Execute
Maintain current configuration and wings level until clear of wind shear.
Warning:
Any attempt to recover loss of airspeed by decreasing pitch or allowing the aircraft nose to fall through is not recommended.
OIL SYSTEM MALFUNCTION/CHIP DETECTOR CAUTION LIGHT ILLUMINATED
A vibrating needle or minor fluctuations of pressure with a steady mean, where extremes of needle movement remain within the normal range and do not exceed +/- 5 psi, are acceptable when no secondary indications of engine malfunctions are observed. With fluctuations greater than +/- 5 psi or outside the normal range, oil pressure drops below 65 psi at power settings above 75% N₁, rises above 85 psi, oil temperature exceeds 100°C, or Chip Detector Caution Light illuminates, accomplish the following procedure.
Note:
During dynamic aircraft maneuvers, oil pressure transients as low as 10 psi for as long as 5 seconds are acceptable provided that oil pressure returns to normal with no unusual or secondary indications of engine failure.
*1. PEL ………. Execute - (utilize a maximum of 850 fl/lb torque and avoid unnecessary PCL movements)
Warning:
Torque indications may be erroneous because of reduction gear box failure. Careful attention should be given to rate of climb/descent, setting PCL as required to maintain proper PEL profile.
Note:
For comparison purposes only, an 850-ft/lb 100 knot climb on a standard day should yield an approximate minimum rate of climb of 1200 fpm (clean), 700 fpm (gear down). If indicated climb rates are significantly lower, suspect erroneous torque indications and increase power cautiously to achieve proper air speed/VSI combination. Closely monitor engine instruments for secondary indications of rising ITT, high oil temperature, and/or fluctuating oil pressure. If secondary indications of engine failure occur while on or above ELP profile, consideration shall be given to securing engine.
*If engine failure/mechanical malfunction occurs: *
*2. Emergency engine shut-down ………. Execute
*3. Engine failure ………. Execute
Note:
Illumination of the magnetic chip detector light indicates that metal particles are present in the propeller reduction gear box.
FUEL PRESS and MASTER CAUTION illuminate:
*1. PEL ………. Execute
*2. Standby fuel pump switch ……….. On
*If light remains illuminated: *
*3. Aircraft ……… Descend below 15,000 feet; avoid high power settings
Note:
Log time of illuminated FUEL PRESS light as solitary operation of the engine-driven primary pump.