BV107-II RFM Flashcards
Memorize and learn the BV-107 II rotorcraft flight manual contents
Gas Generator (NG) Speed Limitations
Max transient: 103.6%- 105.3% for 15 seconds
2 1/2 minutes (OEI): 103.6%
Max TOP: 100.3%
MCP: 100.3%
Single engine 30 min rating: 100.3%
Normal range: 53% - 100.3%
Minimum speed: 53%
Oscillation: No greater than +/- 1% at steady
state
Idle: Approximately 56% +/- 3%
NF Speed Limitations
Overspeed limit range:
109.1% - 118.4% for 15 secs max
Max allowable Speed: 109.1%
Turbine Inlet Temperature Limits (T5)
Max transient during start:
949c for 2 seconds
2 1/2 min power:
758c (OEI)
MTOP and 30 min (OEI emergency power):
696c
MCP:
660c
Aural warning activates when T5 exceeds 707c +/- 3c
Engine oil temperature limits
Max temp:
121c
Min starting temp:
- 40c type 2 oil (common)
- 54c type 1 oil (uncommon)
Engine oil pressure Limitations
Max pressure: 60psi - 75psi
Normal pressure: 20psi - 60psi
Minimum at idle: 8psi - 25psi
Allowable pressure fluctuations in steady state conditions: +/- 3psi maximum
An oil relief valve in the filter will divert oil to the forward sump when pressure reaches
65 - 75psi to protect the engine from excessive oil pressures
No.1 & No.2 ENG OIL PRESS lights illuminate when pressure drops to 7 - 10psi
Engine starter and ignition system Limitations
Starter:
Continuous starter operation no more than 30 seconds.
No more than 3 starts in any 30 minute period
Ignition system:
(Other than with starter motor)
2 mins on - 3 mins off
2 mins on - 23 mins off
5 mins on - 55 mins off
Fuel Pressure Limitations
Max: 995psi
Precautionary: 795psi - 995psi
Normal: 210psi - 795psi
Minimum: 160psi
At what OAT must we use JP-4 fuel?
Minus 29 degrees Celsius or below limited to JP-4 only.
Transmission Torque Limitations (Multi Engine 100% RRPM)
MTOP: 76.5%
MCP: 70%
Transmission Torque Limitations
OEI 100% RRPM
10 second transient: 112%
2 1/2 min: 94%
30-min: 88%
MCP: 78.5%
Transmission Oil Temperature Limitations
Maximum – 110°C
Minimum – -12°C
Normal – -12°C to 100°C
Transmission Oil Pressure Limitations
Maximum – 85 PSIG
Minimum – 20 PSIG
Avoid rapid advancement of ECL during initial run-up to avoid XMSN oil pressures above 60 PSIG
(Can cause premature failure of XMSN seals)
What temperature are we not authorized to fly in visible moisture?
2 degrees Celsius in visible moisture (with inlet filters this is a hard limitation)
Density Altitude Limitations Transport Cat B
Takeoff - 12500 DA
Enroute - 13000 DA up to 19,000lbs
10000 DA above 19,000lbs - 20,000lbs
Landing - 12500’
Max OAT Limit
43.5 degrees
Max wind limits for rotor engagement
52kts and 15kt gust spread
Avoid winds from the 12 to 3 o’clock position
Power Off NR Limitations
Max: 113%
Normal up to 19k: 92-113%
Normal 19-20k: 100-113%
Transient minimum: 88%
When must engine anti-ice be used?
When OAT is 4c or less
Engine Limitations - Takeoff Power
SHP - 1400
Duration - 5 mins
NG - 100.3
T5 - 696c
Engine Limitations - MCP
SHP - 1250
Duration - No Limit
NG - 100.3
T5 - 660c
Engine Limitations - OEI (2 1/2 min)
SHP - 1500
Duration - 2 1/2 min
NG - 103.6
T5 - 758c
Engine Limitations - OEI (30 min)
SHP - 1400
Duration - 30 min
NG - 100.3
T5 - 696c
Max Gross Weight External Load
22,000lbs
Is the H/V diagram a limitation?
Yes, we must comply with the H/V diagram unless you meet the weight requirements of (Figure 1-3: Maximum Gross Weight for No Avoid Region, One Engine Inoperative, Takeoff Power, Fiberglass Rotor Blades) (Improved cat-b supplement)
Hydraulic Pressure Limitations
Max: 1750 PSI
Normal Range: 1050 - 1750 PSI (Normal 1500 PSI)
Minimum: 1050 PSI
Hydraulic Accumulator Limitations
Max: 1750 PSI under HYD pressure
Gas Pre Charge: 500 PSI +/- 25 PSI
Transmission Oil
Aeroshell 65
or
Oil complying with MIL-L -6082 specs
Engine Oil
Exxon 2380
or
Oil complying with MIL-L-23699 specs
Hydraulic Fluid
MIL-H-5606
Power On NR Limitations
Maximum: 100% Nr
Maximum: 104% Nr
(at minimum collective pitch prior to taking off or landing to allow for transitory droop)
Normal Range: (Up to 19k lbs below 6k DA)
92% - 100% Nr
Normal Range: (Above 19k lbs below 6k DA)
97% - 100% Nr
Normal Range: (Above 6k DA)
100% Nr only
General Limits
Acrobatic Maneuvers
No acrobatic maneuvers are approved.
General Limits
Battery Temperature Limitations
Not applicable to CHI aircraft, lead acid 25.8 volt batteries are installed.
General Limits
Floatation
Floatation provisions of the aircraft allow for power on or one engine
inoperative landings on water.
Amphibious operations are not approved.
General Limits
Aircraft Fuel System (Boost Pumps)
Fuel boost pumps must be operative and ON for flight.
General Limits
Aircraft Fuel System (Fuel Crossfeed)
Operation of the fuel crossfeed system is intended primarily for use in single-engine emergencies.
Except in emergency
situations, all crossfeed operations should be terminated when either main
fuel tank reaches 400 pounds of fuel remaining.
General Limits
Aircraft Fuel System (AUX fuel system)
(1) The aux fuel shutoff valves and transfer pumps must be OFF and
CLOSED respectively for all takeoffs and landings.
(2) Auxiliary fuel shutoff valves and transfer pumps must be OFF and
CLOSED anytime the aux tank low pressure warning light is
illuminated or the aux tank is empty.
(3) The aux fuel transfer system will not be used anytime the aux fuel
vent overflow light indicates vent overflow.
(4) Aux fuel transfer may only be accomplished on the ground (land) or
during cruise.
General Limits
Inlet Screens
Flight is prohibited with inlet screens installed when OAT is below 2c and moisture is visible
General Limits
Icing
Flight into icing conditions is prohitbited
General Limits
Pitot Tubes
Cat-A crosswind operations are prohibited unless crosswind pitot tubes are installed.
General Limits
Thunderstorms
Flight into known thunderstorms or areas of moderate to severe turbulence is
prohibited.
General Limits
Low-G Maneuvers
Do not perform negative G maneuvers.
