AOIs Flashcards
LAND AS SOON AS PRACTICABLE
means that extended flight is not recommended. The landing site and flight duration are at the discretion of the aircraft captain.
LAND AS SOON AS POSSIBLE
means that continued flight is not recommended. Land at the first site at which a safe landing can be made.
LAND IMMEDIATELY
means that an immediate landing/ditching is mandatory. The consequences of continued flight are more hazardous than those of landing at a site normally considered unsuitable.
WARNING
Used to emphasize an operating or maintenance procedure, practice, condition, statement, etc., which if not strictly observed, could result in injury or death to personnel.
CAUTION
Used to emphasize an operating or maintenance procedure, practice, condition, statement, etc., which if not strictly observed, could result in damage to or destruction of equipment, loss of mission effectiveness or long-term health hazards to personnel.
NOTE
Used to point out a procedure, event or practice which is desired or essential to highlight.
What are the max speeds?
Forward Flight Fwd flight w/ FLIR mounted Sideward flight Rearward flight Dome lowered Dome at the trail
Forward Flight 151 KIAS Fwd flight w/ FLIR mounted 130 KIAS Dome at the trail 100 KIAS Dome lowered 60 KIAS Sideward flight 30 KIAS Rearward flight 20 KIAS
What is the Basic and Max Gross weight
Basic weight: 14, 500 lbs
Max Gross weight: 20, 500 lbs
What are the dump rates for the fuel tanks?
Max rate: 600 lbs/min
Fwd tank: 315 lbs/min
Aft tank: 365 lbs/min
What is the Max Useable Fuel when gravity/pressure fueling, and how much is un-useable?
Pressure fueling: 4043.4 lbs (35.2 lbs unusable)
Gravity fueling: 4234.8 lbs (35.2 lbs unusable)
When will you get a low-level fuel caution?
210 to 280 lbs per tank remain in a 3° nose-down attitude
170 to 200 lbs per tank when in a hover
When must you declare a fuel emergency ashore? At sea?
At 300 pounds total fuel remaining, the helicopter must declare an emergency and land as soon as possible.
At 150 pounds remaining, an immediate landing/ditching is required.
When do the fuel filter bypass lights illuminate?
The fuel filter bypass caution lights will illuminate whenever the fuel filters of the respective tanks are becoming clogged. This indication will occur prior to the point at which differential fuel pressure will unseat a relief valve within the filter, resulting in unfiltered fuel bypassing the filter and being delivered to the engine.
What does the black stripe on the IBIS indicator mean?
If the pressure in the blade spar drops below the minimum permissible service pressure, the indicator will be activated and will show two black stripes.
What are the items on the accessory drive?
(clockwise from top left) No.1 generator, No.2 generator, primary hydraulic system pump, No.2 main gear-box oil pump, utility hydraulic system pump, auxiliary hydraulic system pump, tail drive-shaft take-off, rotary wing tachometer-generator, torque indicating system oil pump, No.1 main gear-box oil pump
What will cause the main, interim, or tail chip lights to illuminate?
The CHIP DET MAIN warning light illuminates when a main gear-box magnetic chip detector has picked up and retained metallic particles or chips in the oil.
The CHIP DET INTERM and CHIP DET TAIL warning lights will illuminate if a chip is detected in the respective gear-box or if the temperature in the gear box exceeds 140 ± 6 degrees Celsius
Will the aircraft Utility Power Receptacle still receive power if the No.2 generator fails?
No, if No.2 Gen fails, the entire load is dropped and No.1 Gen picks up pilot’s Attitude Indicator only.
If both of the transformer rectifiers fail and you cycle the battery off, can you still jettison your armament stores? What if your battery is on?
The jettison armament switch is powered by essential bus. The essential bus is energized by either or both TRUs or by battery if both AC generators or both TRUs fail. Jettison of stores is only possible with the battery on in the case of dual TRU failure.
What happens in the case of a No.1 Gen failure? No.2 Gen failure?
If the No.1 generator should fail during flight, relays automatically connect the No.2 generator to the No.1 generator load and disconnect the No.2 generator load except for the pilot’s attitude indicator and the sonar.
During flight, if the No.2 generator fails, No.2 generator load is dropped except for the pilot’s attitude indicator, which is automatically switched to the No.1 generator load.
What operates on the No.1 generator?
No.1: VGI Control (Co-pilot), VGI Control (Pilot), ASE, Engine Anti-Ice, No.1 fuel pumps (fwd & aft), armament, ASN-123, Sonobuoy, Fuel dump, Doppler blower, Windshield anti-ice (pilot), GHARS, Ice detector, Inlet anti-ice control, OTPI, FOD de-ice, TACAN, Radalt, Doppler, IFF, RAWS, Radar, HF, IBIS, Dome control, CPM, Windshield wipers
What’s on the No.2 Generator?
VGI control (pilot) Windshield anti-ice (co-pilot) AC utility receptacle Heater blower No.2 fuel pumps (fwd and aft)
Where are the AC utility receptacles? DC?
One 115/200 VAC utility receptacle is located on the right-hand cabin wall adjacent to the hoist operator’s station
The 28 VDC external receptacle is located on the right side of the helicopter below the pilot’s window
What happens if either TRU fails? If both TRUs fail?
If either rectifier fails, the monitored bus is automatically dropped and the appropriate caution panel capsule illuminates. If both rectifiers fail, the primary bus is also automatically dropped and the #1 RECTIFIER and #2 RECTIFIER caution panel capsules illuminate.
What are the 4 buses on the Sea King DC electrical system?
Power for operation of the DC electrical equipment is distributed through four buses: essential bus, primary bus, monitored bus and battery bus.
What does the Essential bus power? Primary? Monitored?
The essential bus supplies power for operation of the DC flight instruments and all equipment necessary for safety of flight
The primary bus supplies power to equipment necessary for completion of missions
The monitored bus supplies power to equipment not required for safety of flight
Why does the battery need to remain on during flight?
The battery switch should remain ON at all times during flight to ensure DC power is supplied to the supervisory panel. Failure to do so will cause a loss of both generators should a dual transformer rectifier failure occur and may cause improper switching of generator loads should a loss of No.1 generator occur.
What do you lose when the ASE is U/S?
The ASE in conjunction with associated electronic and hydraulic systems performs the following functions when engaged by the pilot: Directional Stabilization Pitch and Roll Stabilization Barometric Altitude Control Ground Speed Control Hover Trim Control Radar Altitude Control Vertical Accelerometer Cable Angle Control
What pressure does the utility hydraulics system operate at? What about the hoist?
The utility hydraulic pump, located on the accessory drive section of the main gear-box, provides 3000 PSI hydraulic pressure. The hoist winch motor is powered by 1250 PSI hydraulic pressure from the utility hydraulic system.
Describe the rescue hoist system capacity and cable?
A 600 lbs capacity hydraulic hoist winch, with approximately 100 feet of usable cable with the first and last 20 feet stained orange.
What sub-systems run off the utility hydraulic system?
Landing gear hauldown blade and pylon fold/spread rescue hoist (1250 psi) hydraulic cable reeling machine
How can the main landing gear be lowered?
Normally using hydraulic pressure from the utility hydraulic system
In the event of failure of the normal system, a supply of compressed air is provided, which, when expelled, blows the main landing gear down
If this method also fails, a manually actuated shuttle valve will permit venting of the hydraulic lines to the reservoir, thereby allowing the main landing gear to lower through gravity
How can you guillotine the hoist cable?
Two guarded switches, marked “HOIST CABLE SHEAR,” are provided to cut the hoist cable at the winch in case the cable becomes entangled . . . One switch is located on the overhead switch panel in the pilots compartment. The other is located on the cabin wall above and to the left of the cargo door.
Who can shear the hoist in the PILOT position? In the CREW position?
PILOT position: Only the pilot can shear the rescue cable.
CREW position: The pilot and the hoist operator can shear the rescue cable.
What are the breakaway weights for the haul down cable, HIFR hose and emergency messenger?
Haul down cable: 6000 ± 500 lbs
HIFR hose: 400 to 500 lbs
Emergency messenger: 50 lbs
What are the lowering speeds for the messenger?
0 to 10 feet: 16 feet per minute
10 to 100 feet: 200 feet per minute
From what bus are the following powered and what do they provide power for? #1 Radio bus:
#1 Radio Bus (I VISIT U) powered from the essential bus
ICS VHF/AM ILS/VOR Secure Voice IFF TACAN UHF
From what bus are the following powered and what do they provide power for? #2 Radio bus:
2 Radio bus: powered from the primary bus (UH DOULA)
UHF/ADF
HF
Doppler OTPI UHF Antenna LF/ADF ASN-123
From what bus are the following powered and what do they provide power for? #3 Radio bus:
3 Radio bus: powered from the primary bus (SSK VFR)
Sono Receivers
Sonar Power
KY-75
VHF/FM
Radalt
When in EMERG / ALT 1 / ALT 2 positions how does the ICS work?
EMERG: Provided so that in the event of failure of both the isolation and microphone amplifiers, or a failure of the ICS power, UHF and HF radio communication is possible and intercom is possible by utilizing the radio side tone on UHF or HF.
ALT1: Both audio and microphone signals pass through the isolation amplifier.
ALT2: Both audio and microphone signals pass through the microphone amplifier.
What systems does the Doppler provide inputs to?
Hover indicators, ASE, GHARS and ASN-123.
When must the Radar be in Standby? What are the hazards associated with people being close to the Radar?
After No.2 engine start, Post landing/HF, HIFR check, prior to hoisting/slinging
To avoid possible harmful effects from exposure to radio frequency radiation, personnel should not approach within 10 feet of the antenna when it is radiating and scanning and not within 50 feet when it is radiating and not scanning.
What is the purpose of entering the current wind on the Doppler control panel?
During SEA operation, the estimated surface wind speed and direction can be selected on the Doppler control panel providing velocity correction for the Doppler information.
What will cause the IFF caution light to illuminate?
The caution light illuminates whenever the caution light circuitry detects an inoperative MODE 4 capability, provided that:
the KI-1C/TSEC computer is installed
the aircraft power is on
the IFF MASTER switch is not OFF
What is the only receiver fault on the GPS that can be rectified by techs?
Fault 16 – Antenna Feed Line-shorted or open
What are the lower/raise speeds for the sonar?
The reeling machine lowers the transducer at rates of 8 feet per second in air and 3 feet per second in water.
The transducer and cable are reeled in at a rate of 11 feet per second up to 40 feet of depth, then 5 feet per second to 10 feet below the helicopter and then 1 foot per second to the trail position.
GHARS is designed to operate in true between ___ degrees North and South.
70
What are the components of the Gyroscopic Heading and Attitude Reference System (GHARS) system? (7)
Gyro reference unit Electronic unit Azimuth magnetic detector Compass repeater amplifier Synchro signal amplifier Gyro controller Manual heading insert control
What are the CRA 2-2A outputs?
The amplifier is a servo mechanism which repeats the aircraft heading derived by reference to the flux valve. The amplifier supplies magnetic heading information to the RMI, CDI and the BDHIs.
What are the CRA 3 ouputs?
The CRA-3 is a repeater amplifier of the GRU true or grid heading output which supplies true heading information to the ASE, the ASN-123C, the Doppler, the search radar and the BDHIs.
What information is displayed on the needles of the BDHIs?
ARN/TAC: Bearing information from LF ADF is displayed by pointer No. 1 (small needle) and TACAN or VOR information is displayed by pointer No.2 (big needle) and the three-digit counter.
ASN: ASN-123 readout information is displayed by pointer No.1 and the three-digit counter and TACAN or VOR bearing information is displayed by pointer No.2
ARA/TAC: Bearing information from the facility selected on the ARA selector panel is displayed by pointer No.1 and TACAN or VOR information is displayed by pointer No.2 and the three-digit counter.
What will cause the BLADE PRESS Light to illuminate on the Master Caution Panel?
One or more of the main rotor blade spars has dropped below the allowable limit (5 to 6.3 PSI at 21°C)
Loss of AC power
Failure of the detector or signal processor
How many SLB-1000-200 are there on the aircraft? What is the frequency that they transmit on and for how long? How do you turn them on, and how do you know when it’s working?
Five SLB-1000-200 Personal Locator Beacons (PLB) are carried as standard equipment; one in the multi-place raft and one in each back-type life-raft.
Emergency beacon with embedded GPS, capable of transmitting distress signals on 121.5, 243.0 and 406 MHz, operable for 24 hours.
To activate, unsnap the antenna from its stowed position to the deployed position, then press the ACTIVATE button for approximately 2 seconds, until the red XMIT LED illuminates. When the beacon is activated, the red XMIT LED will illuminate for approximately 1 second to acknowledge.
List the 4 distinctive situations where activation of the CPI beacon will occur.
Crashing
Ditching
Forced Landing
Manual Release in Flight
On what frequency does the CPI operate and for how long?
The radio transmitter is designated to operate on the international distress frequency of 243 MHz, modulated with a swept audio tone. The auxiliary battery pack provides for a minimum of 48 hours of beacon operation at -40 degrees Celcius.
Where is the under-water locator beacon located, and how long will it transmit for?
An underwater acoustic beacon is installed in the aft cabin, directly under the tail rotor drive shaft on a partial bulkhead just forward of the tail probe. The UAB transmits a nine millisecond acoustic pulse, at 37.5 KHz, once per second for a minimum of 30 days.
What activates the HEELS and for approximately how long will it stay lit?
A loss of signal, caused by both generators winding down will cause the control units to activate their associated light tubes. The system will illuminate the light tubes at the equivalent of approximately 30 per cent Nr. Battery pack life will be sufficient to illuminate the light tubes for a minimum of 10 minutes.
What is the shear pin limit of the sling assembly and maximum external load weight?
15 000 pound shear pin; max external load 5000 pounds excluding the weight of the sling assembly.
When shall the barker bar be installed?
The safety bar is to be down for take-offs and landings ashore and up for take-offs and landings at sea.
How much does the PGPU weigh?
58.5 pounds
What are the PGPU operating voltages? (discharged, lowest start voltage, nominal output)
The power cells provide a nominal 25.5 to 26 VDC output when free standing and off charge
A fully discharged PGPU should show a reading when off charge of 20.8 to 21 volts
Aircraft start shall not be attempted if PGPU indicates 24 volts or less
What are the three modes in which the PGPU operates?
- Continuous ground power with mains power on (PGPU connected to AC power source) and PGPU connected to aircraft, up to a maximum output of 40 amps DC. Loads that exceed this limit will draw the additional amps from the power cells
- Stand-alone condition without mains power on, the power cells deliver a standing voltage of between 25 and 26 VDC
- Rapid recharge (38 minutes or less) of the dry power cells from mains VAC power sources
What are the FLIR azimuth and elevation limits?
The azimuth scale has 0 to 150 degrees left and right displayed but can only be slewed to 120 degrees in 30 degree increments displayed across the top of the screen. A similar scale with +30 to -180 degrees in 30 degree increments for elevation is displayed down the right edge of the screen.
What is the maximum weight that can be carried on the forward and aft launchers of the aircraft?
Fwd launchers – 1187 pounds (each)
Aft launchers – 500 pounds (each)
When is normal sonar dipping operation prohibited?
Air temperature is -12°C or less
Water temperature is -2°C or less
If air or water temperature is 0 degrees Celsius or less and the sonar dome is at less than 100 feet water depth, the sonar dome should be recovered using INTERMEDIATE speed.
What is the warning associated with a jammed hoist in the AOI?
Any attempt to raise or lower a jammed hoist may shear the cable.
What are the limits for maneuvering with a GHARS failure? Why?
More than 10° pitch and 15° roll may cause damage to the radar antenna.
What is the caution associated with using a halon extinguisher with a Lithium Fire?
Halon fire extinguishers shall not be used to extinguish lithium fires as a violent reaction may occur.
How many Songs can we carry?
5 loaded in chutes, Carry up to 6 in (A) racks (15 in portable racks) and 26 in B racks
C2A1 Smoke, what colour? what used for? Method of activation? length of burn?
Coloured (yellow) flame (night) and smoke marker (day) used as px marker on water in SAR and ASW
Ignited shortly after contact with salt water (Will not operate in freshwater)
Burns for approximately 13.5 to 20.0 minutes
Mk 58, what colour? what used for? Method of activation? length of burn?
Coloured (yellow) flame (night) and smoke marker (day) used as px marker on water in SAR and ASW
Ignited shortly after contact with salt water (Will not operate in freshwater)
Bigger, heavier and burns longer (45 to 55 minutes)
