Progress EP's Flashcards
Loss of Tail Rotor Control
WARNING
- Following the appearance of the #1 TAIL RTR SERVO caution without the associated BACK UP PUMP ON and #2 TAIL RTR SERVO ON advisories, the aircraft will demonstrate normal yaw responses in flight regimes that do not require excessive tail rotor performance; however, at slower airspeeds, below approximately 40 KIAS, more pronounced effects of loss of tail rotor control may become more apparent.
- After touchdown, rapid reduction of collective or PCLs may cause excessive and uncontrollable yaw rates.
- If an uncontrolled right yaw develops at too low of an airspeed, loss of waveoff capability may result. Increasing collective may increase the yaw to unrecoverable rates. Performing Loss Of Tail Rotor Drive (Altitude And Airspeed Not Sufficient To Establish Autorotation) procedure may be required.
*1. Collective/airspeed — Adjust as required to control yaw.
WARNING
If the tail rotor control cables are damaged, the hydraulic transients associated with switching the TAIL SERVO switch from NORM to BKUP may cause catastrophic damage to the tail rotor controls.
- If hydraulic malfunction is evident:
a. TAIL SERVO switch — BKUP.
b. BACKUP HYD PMP switch — Check ON.
c. Backup Hydraulic Pump Fails to Operate emergency procedure — Perform, as required. - External cargo/stores/fuel — Jettison/dump, as required.
- Land as soon as practicable.
- APU Emergency Start procedure — Perform prior to landing.
- PCLs — As required.
Land As Soon As Possible
Execute a landing at the first site at which a safe landing can be made
Unusual vibration on deck
*1. Collective - Lower.
*2. PCL - OFF.
*3. Rotor brake - Apply as required.
APU FIRE
*1. APU T-handle - Pull
*2. Confirm fire
*3 FIRE EXTGH switch - RESERVE ( MAIN if required and available)
If airborne and fire continues:
*4. Land immediately
If fire appears extinguished:
*5. Land as soon as possible
If on ground:
*6. Fire extinguisher - As required
- Fuel pump switch - OFF
- APU CTRL switch - OFF
Single-Engine Failure in Flight
*1. Engine Malfunction in Flight emergency procedure — Perform.
- Land as soon as practicable.
Consideration should be given to performing the following:
- Engine Shutdown in Flight emergency procedure.
- Engine Air Restart emergency procedure.
- Single-Engine Landing emergency procedure.
Tail/Intermediate Transmission Malfunction
If failure is imminent:
*1. Land immediately.
If failure is not imminent:
*2. Land as soon as possible.
WARNING
- High power settings require maximum performance of the tail rotor drive system and may precipitate ultimate drive failure.
- Consideration should be given to transiting at an altitude sufficient to enter an autorotation and performing the applicable steps of the Immediate Landing/Ditching emergency procedure.
Note
An INT XMSN OIL HOT or TAIL XMSN OIL HOT caution occurring simultaneously with a WCA MISCOMPARE alert may be an indication of a mission computer/backup computer card failure.
Land as soon as practicable
Extended flight is not recommended. The landing site and duration of flight is at the discretion of the PIC.
(#1/#2) Fuel Filter Bypass or (#1/#2) Fuel Press
*1. Fuel selector lever (affected engine) - XFD (DIR if currently in XFD).
- Land as soon as practicable.
If affected engine indications are abnormal: - Engine Malfunction in Flight procedure perform.
Main Transmission Malfunction
WARNING
Possible indications of main transmission imminent failure may include: yaw attitude excursions with no control input, an increase in power required for a fixed collective setting, failure of a main generator or hydraulic pump, increased noise, increased vibration levels, or abnormal fumes in the cabin.
If failure is imminent:
*1. Land immediately.
If secondary indications are present:
*2. Land as soon as possible.
- APU Emergency Start procedure — Perform.
- No. 1 and No. 2 GENERATOR switches — OFF, as required.
If no secondary indications are present:
- Land as soon as practicable.
WARNING
Operation of the main gearbox with no oil pressure may result in failure of the tail rotor drive takeoff pinion gear and subsequent loss of tail rotor drive.
Note
- Consideration should be given to performing the applicable steps of the Immediate Landing/Ditching emergency procedure and transiting at a minimum power airspeed and low altitude flight profile (approximately 80 feet and 80 KIAS) to permit a quick flare followed by an immediate landing/ditching.
- A loss of all main transmission lubricating oil may result in unreliable temperature indications from the main transmission temperature gauge and temperature sensor (caution).
- Continued operations in the precautionary range for temperature and pressure are acceptable provided that the ambient conditions and flight regime of the aircraft correspond with the guidance set forth in the transmission limitations section of Chapter 4.
Underwater Egress
*1. Emergency breating decive - As required
*2. Cords - Disconnect
*3. Door/window - Open/Jettison.
*4. Place hand on known reference point.
*5. Harness - Release
*6. Exit helicopter
After egress:
*7. Swim clear of helicopter and inflate LPU.
Boost Servo Hardover
*1. PAC call — “BOOST, BOOST, BOOST”.
*2. SAS/BOOST pushbutton — Off.
- Minimize flight control movements.
- Land as soon as practicable.
- Make a shallow approach to a hover, maximum 15 knots crosswind. Taxi no more than necessary.
Caution
- Up to 75 pounds of left pedal force will be required when hovering with boost servos off with starboard crosswinds. This value is significantly reduced with port crosswinds.
- Landings with boost servos off on all single spot air-capable ships should only be attempted if there is no large landing platform (LPD or larger) or shore base available.
Abort Start
To abort start:
*1. PCL - OFF
*2. ENGINE IGNITION switch - OFF
If engine oil pressure is indicated:
- **3. Starter - Engage**
4. Starter - Disengage after 30 seconds and TGT below 540 Celcius
APU Emergency Start
*1. ECS - OFF
2* - AIR SOURCE ECS/START switch - APU
3*. FUEL PUMP switch - APU BOOST
*4. APU CTRL switch - ON
*5. APU GENERATOR - ON.
1 Primary Servo or #1 Transfer Module Leak
*1. SERVO switch — 1ST OFF.
*2. Land as soon as practicable.
If the BACK UP RSVR LOW caution also appears or the backup pump fails:
*3. Land as soon as possible.
Note
Be prepared for loss of tail rotor control.
If the #2 PRI SERVO PRESS caution and/or HYD warning appears:
*4. Land immediately.
WARNING
Failure to ensure BACKUP HYD PMP switch is in AUTO or ON position prior to landing with a #1 RSVR LOW or #1 HYD PUMP caution present will result in loss of tail rotor directional control when the weight on wheels switch is activated.
Smoke and Fumes elimination
*1. Airspeed - adjust as required
*2. Doors/windows/vents - Open
*3. Aircraft - Yaw, as required.
Engine Torque or TGT Spiking/Fluctuations
If an engine instrument is spiking/fluctuating and inducing secondary indications in Ng, Np, and/or Nr:
*1. Engine Malfunction in Flight emergency procedure — Perform.
If fuel contamination is suspected:
*2. Land as soon as possible.
WARNING:
PCL movement during engine fluctuations may precipitate an engine failure. Consider performing APU Emergency Start procedure prior to manipulating the PCL. Maintaining a low power setting when moving the PCL will minimize the Nr decay rate if the malfunctioning engine fails.
If engine electronic circuitry is suspected:
- PCL (malfunctioning engine) — Momentarily advance to LOCKOUT, then retard to set:
a. Torque 10% below good engine, or
b. Matched Ng, or
c. Matched TGT.
If fluctuations persist:
- PCL (engine in LOCKOUT) — Retard to IDLE, then return to FLY.
- Repeat Steps 3. and 4. for other engine, as required.
If an engine instrument is spiking/fluctuating with
no secondary indications:
- Land as soon as practicable.
Compressor Stall
*1. Engine Malfunction in Flight emergency procedure — Perform.
*2. PCL (malfunctioning engine) — IDLE.
If TGT decreases and stall clears:
- PCL — Slowly advance to FLY.
If stall remains cleared:
- Land as soon as practicable. Avoid rapid collective movement.
If TGT continues to rise, Ng decreases below normal idle speed, or any other malfunction is indicated:
- Engine Shutdown in Flight emergency procedure — Perform.