EP\Limits Flashcards
What is the max operating engine oil temp limit?
115c
What is the VNE for OEI under all conditions?
110kts
What are the power on Rotor limits (NR)?
85% min transient (max 20 sec) 96% (min), 96%-104% (max cont), 106% (max 5 minutes, partial power), 106% (max trans 12 sec)
What are the engine oil pressure limits?
1.3 min, 1.3-1.5 caution, 1.5-5.0 continuous, 5.0 max continuous
What is the VNE for a steady autorotation under all conditions?
90kts
What are the main transmission oil temperature operating limits?
-10-105c
To prevent starter overhear damage, what are the starter energized time limits for a battery start?
30 on
60 off
30 on
60 off
30 on
30 min off
Define the UH72 mast moment limits?
Maximum red circles, caution range yellow circle, normal range from yellow circle towards center
What is the total usable fuel in pounds
1530lbs
What are the main transmission oil pressure limits?
1.0 min, 1.0-1.5 caution, 1.5-5.0 continuous, 5.0 max cont
The first limit indicator gives an analogue indication of the limiting parameter, what are the three primary engine limitations?
N1
TOT
Torque
Define land as soon as practicable?
Landing site and duration of flight are at discretion of the pilot, extended flight not recommended
Land as soon as possible
Land without delay at the nearest adequate site which a safe approach and landing can be made
Land Immediately
Urgency of landing is paramount, survival of occupants should be primary consideration
Engine 1 or Engine 2 fire in-flight
1) OEI flight conditions: ESTABLISH
2) Airspeed: Reduce if exceeding 100kts
3) Fire SW: Rais guard, press
4) BOT1/BOT 2 pb: Press, Bot 1 activated; EXT indicator light comes on
5) Clock stopwatch: Start (after bot EXT light goes off)
6) Affected engine: Identify
7) Single engine emergency shutdown: Perform
8) Passengers: Alert
9) LAND AS SOON AS POSSIBLE
If fire warning is still on after 1 min:
10) BOT 1/BOT 2 pb: Press, Bot 2 activated
-EXT indicator light comes on
11) Land immediately
Single engine failure-Hover OGE
1) Collective lever: Adjust to maintain rotor RPM
2) Airspeed: Increase if possible
-FORCED LANDING
3) Landing attitude: Establish
4) Collective Lever: Raise to control descent and cushion landing
-AFTER LANDING
5) Affected engine: Identify
6) Single engine emergency shutdown: Perform
-TRANSITION TO OEI-FLIGHT
3) Collective Lever- Adjust to OEI limits or below
4) Rotor speed: Trim to max
5) Airspeed: Gain 65 KIAS
-AFTER REACHING SAFE ALTITUDE:
6)Collective lever- Reduce to OEI MCP or below
7) Affected engine: Identify
8) Single engine emergency shutdown: Perform
9) LAND AS SOON AS PRACTICABLE
Single engine failure- Flight
1) OEI flight condition: Establish
2) Rotor speed: Trim to max
3) Affected engine: Identify
4) Single Engine emergency shutdown: Perform
5) LAND AS SOON AS PRACTICABLE
Engine overspeed- governor failure
1) Collective lever: Raise to maintain N2 & NRO limits
2) VAR NR system NORM/MAN sw- Check Manual
3)N2 trim sw: Try to trim NRO to 101%
If step 3 is not possible:
4) Affected engine: identify
5) Twist grip (affected engine): Rotate toward IDLE until N2 and NRO stabilize in normal range and FLI needles match
6) LAND AS SOON AS PRACTICABLE
Single engine emergency shutdown
1) Twist grip: Rotate slowly to IDLE, check indications, then off
2) Rotor speed: Trim to max
3) BLD HTG EMER/NORM sw- EMER
4) BLD HTG rheostat- ON
Autorotation
1) Collective Lever- Reduce to maintain NRO within limits
2) Airspeed: 75 KIAS
3) Double engine emergency shutdown: Perform
AT APPROXIMATELY 100ft AGL
4) Flare attitude- Establish to reduce forward speed and rate of descent; control NRO
AT 8-12ft AGL
5) Flare attitude: Reduce to approx 7 degrees
6) Heading- Maintain
7) Collective Lever- Raise to stop descent and cushion landing
8) BAT MSTR sw- OFF
Tail Rotor Drive Failure/ Fixed-pitch Tail Rotor Control -Forward Flight
1) Collective Lever- Reduce to obtain minimum sideslip angle
2)Airspeed- 70 KIAS or higher
3) Suitable landing area- Select
4) Shallow approach with nose left- Perform
IF AIRSPEED CAN BE REDUCED BELOW 40 KTS WITH NOSE STILL POINTING LEFT
5) Airspeed- Reduce close to ground until nose is in flight direction
6) Landing- Perform
IF THE NOSE DIRECTION CHANGES FROM LEFT TO RIGHT AT AIRSPEEDS HIGHER THAN 40 KTS
5) Airspeed- increase
6) Approach- Abort, climb for autorotation
7) Autorotation- Perform
