Flashcards in MH-65 STAN CHECK Deck (79)
Main Gearbox Oil Reservoir
MIL-PRF-6086E Grade "M". Oil level has to be between the MIN and MAX line. Capacity is 9.34 quarts
Tail Gearbox Oil Reservoir
MIL-PRF- 6086E Grade "M". Oil level at the MAX line
Hydraulic Fluid Reservoir
MIL-H-83282. Oil level should be midscale/ at the bulls-eye.
Rescue Hoist oil
MIL-L-7870. Oil level should be above the white line.
Helium. 3100 psi minimum
Nitrogen/Compressed Air. Main: 123 psi/ Nose: 80psi
Different fuels the helo can take: JP4, 5, 8, JETA, A1, A-M, B.
Prist: .07- .15% by volume
Nitrogen/Compressed Air. 1600 psi minimum
Engine Oil Reservoir
Mobil-Jet 254. Oil level should be between bottom of the sight glass and the min line. Check the oil level within in 15 minutes of shutdown. Reservoir capacity is 2 gal.
Absolute VNE Power- On: 175 KIAS
Absolute VNE Power-Off: 135 KIAS
Maximum cabin sliding door speeds:
Door Removed - 120 KIAS
Door Locked in open position: 100 KIAS
Door movement: 80 KIAS
Maximum Rescue Hatch speeds:
Hatch locked in open position: 80 KIAS, 35 kt sideward
Hatch Movement: 60 KIAS, 30kt sideward
Maximum Cargo Hook Load speed: 90 KIAS
Maximum Airspeed with float bags armed or inflated: 90 KIAS
Maximum airspeed with skis installed: 120 KIAS
Maximum Touch down speed: 60 KGS
Maximum touch down speed with skis on snow: 35 KGS
Maximum brake speed: Gross weight at or less than 8900 lb - 38 KGS
Gross weight above 8900 lb - 30 KGS
Maximum Airspeed with NR HI: 135KIAS
Maximum Sideward Flight: 35 kt
Maximum Landing Light Extension Speed: 135 KIAS
Oil cooling (Ram Air)
Engine oil cooling(ram air): 75 kts
MGB oil cooling (ram air): 120 kts
Adverse weather penetration speed
NR HI Max Speed:
135 kts/ 40 degrees AOB
Vertical stabilizer becomes anti-torque device
Cabin: 125 lb/sq ft. Max load 1320 lbs
Baggage compartment: 125 lb/sq ft. Max load 440 lbs
61.5 lb/sq ft. Metal panels
Rotor Diameter: 39'2"
Overall Length: 44'5 (static) 44'10" (dynamic)
Overall width (at stabilizer): 10'6"
Height to top of rotor head: 12'9"
Height to top of fin 13'5"
Ground clearance: 6"
Flight System Limitations
VS: >70 KIAS 0-3000fpm
IAS-VS: >40KIAS 0-3,000 fpm
HDG SEL: >40 KIAS
NAV: >40 KIAS
APPR: >40 KIAS, 12 deg GP
T-HOV: Below 2,500 RADALT
HOV AUG GA: Visual hover maneuver >25 feet AGL
Engine Mod overview
Mod 1: Transmission shaft/ Accessory gearbox
Mod 2: Axial compressor
Mod 3: Gas Generator ( 100% N1 = 52,00 RPM)
Mod 4: Power turbine (100% N2 = 39,000 RPM)
Mod 5: Reduction Gearbox (100% = 6,000 RPM)
N1 52,000 RPM @ 100%
Three sensors: N1A, N1B signal used by FADEC for engine control, derived from the dual channel engine driven alternator.
N1C signal sent to EBCAU for engine control in the even of major FADEC failure and VEMD for cockpit display.
N2 39,000 RPM @ 100%
Three Sensors: N2A - transmitted directly to the pilot's NR gauge (triple-tach)
N2B, N2C - transmitted to the FADEC and VEMD for N2 speed control and overspeed protection.
Power turbine is mechanically independent from the Gas Generator turbine. Accessories driven by the power turbine include the output shaft and the engine compartment cooling fan.
*A malfunctioning stop electro-valve will inhibit overspeed protection on that engine.
Turbine Outlet Temperature (TOT)
The TOT for each engine is measured at the free power turbine inlet by eight dual-thermocouples connected to a temperature conformation box (T4.5). The conformation box provides an average TOT signal to the FADEC and the VEMD, but are designed to be redundant for each system.
Engine Fire Warning System
Each fire warning circuit consists of three bimetallic fire detectors which are wired in series; two located on the accessory section (200'C) and one located gas generator (400'C).
Engine Fire Extinguisher
The fire extinguisher system consists of tow spherical bottles filled with bromotrifloromethane (or Halon). The bottles are electrically controlled consisting of four pushbutton switches located on the instrument panel above the FIRE and FAIL warning lights, and two low-pressure caution lights. The caution lights, labeled L EXT and R EXT are located on the WCA, and illuminate when pressure in the bottle drops below 230 psi. One bottle may be discharged into each engine compartment or both bottles may be discharged into either engine compartment. Pressing the PRI pushbutton for the #1 engine will discharge the left extinguisher into the #1 engine compartment. Pressing the SEC pushbutton for the #1 engine will discharge the right extinguisher into the #1 engine compartment.
Vehicle Engine Multifunction Display
Normally, the top LCD displays the FLI while the bottom is scrollable between the Vehicle, Fuel, EPC, and System Status pages. If either screen fails, the remaining screen will be scrollable between the FLI, Vehicle , and Fuel pages. EPC and System Status pages will no longer be available.
FLI(first limit indicator)
Monitors all primary engine parameters and limitations (N1, TQ, TOT). The single needle in the center of the screen measures the parameter closest to reaching its limit, given the current operating condition. Anytime the FLI needle enters the yellow zone, the limiting parameter will be underline in yellow. If the FLI needle exceeds the red bar, the limiting parameter will be underlined in red.
FLI DEGR/FLI FAIL
An amber FLI DEGR annunciation will appear anytime a N1, TOT, or TRQ parameter will change from white to yellow. FLI FAIL will display anytime N1, TOT, or TRQ parameters are not valid on the relevant engine. ALL three parameters will change to amber and lose their numerical value.
FLI-AEO (all engines operating)
FLI mode when N1's are above 40 % and neither FADEC is in an OEI, training or idle state. A yellow arc runs from 8.8 FLI (maximum continuous power) to a red bar at 10.0 (maximum takeoff power). A red diode at 10.7 FLI indicates maximum transient power.
FLI- OEI (one engine inoperative)
FLI mode when either engine N1 is lower than 40% or either engine is ion idle. The single=engine display will include a yellow dashed bar indicating Continuous OEI power, a dashed red bar for 2-minute OEI power, and a solid red bar for 30-second OEI power. If the FLI needle passes the OEI continuous bar, the limiting parameters will be underline in yellow. If the needle passes the 2-minute OEI bar, the limiting parameters will be underlined in red. An OEI HI annunciation will appear at the onset of the single-0engine condition and may be scrolled down to the LO or CT position using the collective OEI buttons.