Limitations Flashcards
What should you do if a limit is exceeded
fill out the 2408-13-1 with what limit was exceeded with the time and range. The aircraft should not be flown until corrective action has been taken.
How many pilots are required to fly
2 pilots
Red and yellow striped tapes
Limit has been exceeded, continued operation may cause damage or reduce component life
Yellow Tapes
Special attention should be given to what the parameter represents
Green Tapes
Normal Operations
Where is the max continuous line on the NG tape
104.6% (105)
At what level do you get a low fuel caution
200lbs
What color does the fuel tape readout turn with low fuel
Yellow
Max wind velocity for rotor start/stop
45KTS any direction
Power off rotor speeds are authorized up to___ For MTF
120%
Operating againsts the rotor break is
Not Authorized
Rotor break should not be operated with
Engines on, besides and emergency stop. No higher than 76%NR
Routine rotor brake stop criteria
Less than 40%NR
150-180PSI
No less than 12s
Minimum/maximum rotor brake start pressure
450/690PSI
Use of rotor brake is limited to
Single and duel engine starts, and operations at idle
Rotor brake operations are not time limited
When must you make an entry on a -13 about transmission oil pressure
If transmission oil pressure is not steady during level flight/hover, if it is steady but under 45PSI, drops of 10 PSI
What will happen if you demand max power from engines with two different ETF’s
There will be a torque split to their appropriate MTA. The high power engine may exceed dual engine limits
NP Limits
12s transient- 105-107%
Transient- 101-105%
Normal - 95-101%
Transient-91-95%
Avoid- 20-40,60-90%
Power on NR Limits
Transient-101-107%
Normal- 95-101%
Transient- 91-95%
Power off NR Limits
Max 110%
Transient- 105-110%
Normal-90-105%
NG Limits
12 s Transient- 105-106%
Normal- 0-105
Q Limits
10s Transient- >80KIAS 100-144%
<80KIAS 120-144%
Normal- >80KIAS 0-100%
<80KIAS 0-120%
Single Engine 10s- 135-144%
Normal- 0-135
TGT Limits
12s Transient- 903-949
2.5 min contingency- 879-903
Start Abort- 851
10 min - 846-879
30 min - 793-846
Continuous- 0-793
When is the numerical readout displayed on the TGT tapes
793
Engine Oil temperature/ Pressure limits
Temp
Continuous -20-150
30 min 135-150
Pressure
idle/transient 22-26
continuous 26-100
5 min 100-120
Transmission oil temperature/pressure limits
Temp
continuous -20-105
precautionary 105-140
Pressure
idle/transient 20-30
continuous 30-65
precautionary 65-130
>10 deg 30-35
>15 deg 10-15
Write up if it is steady but below 45 PSI or sudden drops of 10 PSI
Fuel Ranges
Normal >200LBS per tank
Precautionary <200 LBS per tank
What is the engine starting cycle
The interval between start initiation and acceleration of the compressor, zero RPM to starter drop out
What is the delay between attempted starts after an abort start
1 min after disengaging the starter
Engine start limits
<15 deg
2 starts 3 min rest 2 starts 30 min rest
>15 deg
2 starts 30 min rest
Cross-bleed starts may not be attempted unless
Engine 1/2 anti ice is off
NG>90%
NR 100%
If above 14,000’ how should single engine starts be made
after engaging the starter, wait until an 24% NG Before moving to idle
When are Fuel boost pumps used
When required by EP’s
When using JP4 > 4,000’
When operating cross feed with JP4
Changing from JP4 to JP5/8 for 3 refuels
What fuel may cause possible hot fuel in engine nacelle area if engine is restarted within 2 hours of shutdown and air temperature is above 21 deg?
JP4- Must have dual engine at 100%NR before take off
Weight limitations for UH-60M
MAXGW-22,000
MAXGW w/ sling load over 8,000- 23,500
MAXGW Ferry- 24,500
External lift mission weight limits
MXGW above 22,000 lbs requires at least 8,000 lbs up to 9,000 lbs
Cargo Floor max weight
300 lbs/sf
Storage compartment weight
125 lbs
Tiedown fittings capacities
4 ceiling- 4,000lbs
17 floor- 5,000lbs
8 Cargo net- 3,500 lbs
Max Cargo hook weight limit
9000 lbs
Rescue Hoist weight limit
600lbs
Hoist rest cycle
> 1 lift, >300lbs - 30s
Sling Load VNE’s
<8,000 lbs - 140
>8,000 lbs - 120
One Engine inop AS
130
Autorotation AS
<16,825 - 150
>16,825 - 130
Volcano- 100
Stab man mode inop/ gw>21,000- 120
Wind limitation for hovering with ESSS
35KTS
SAS/HYD Inop
1-170
2-150
IIMC-140
Search/Landing Light Speed limitations
landing
Extend-130
MAX-180
Search
Extend -100
MAX- 180
What are the Rescue Hoist airspeed limitations
Same as Search/Landing light limitations
Max Airspeed with Skis
155
Cabin/Gunner Window limitations
145/170
What speed shall gunner windows not be transitioned past
120
What is the readout when aircraft is above VNE with stab man mode
Red VNE arc, Red #’s w/ black outline
Prohibited manuevers
Hover turns greater than 30deg/sec
+/- 30 deg pitch
>60 deg roll
Simultaneously moving both EPCL’s to idle or off during flight
Rearward Ground Taxi
When can the stabilator be operated in MAN mode
During Emergencies
EP training w/ and IP/SP
Maintenance Flights
Why must you avoid prolonged rearward flight
Damage to Cabin windows, collection of fumes
Manuevers entered from a low power setting may result in
transient droop of greater than 5%
What defines the limits of the aircraft apart from chapter 5
Main Rotor Blade Stall
How do you recover from main rotor blade stall
Reducing severity of the maneuver, reducing collective, airspeed, or bank angle
Abrupt pedal inputs should be avoided above
80 kts
Sling load bank angle/rearward airspeed
30 deg
35 kts
Rescue hoist max rate of descent
1,000 fpm
Bank angle should be limited to what when a primary servo fails
30 deg
What can cause a stabilator auto mode failure
30 deg nose low
dive maneuver
high acceleration take-off
What does a beeping audio tone indicate
Stab Auto mode failure
Landing Gear limitations
<16,825 lbs
Level- 540
Slopes-360
>16,825 lbs
Level- 300
Slopes- 180
Maximum forward tochdown speed
60 KGS
Slope Limits
Nose up/left right - 15deg
Nose down- 6 deg
For every 5 KTS decrease 2 Deg
When using ski’s what should you be prepared to do when doing an upslope landing
Use Toe brakes
slopes are limited to 10 deg
What is the Ice rate meter calibrated for
100KIAS
It will read greater at faster airspeeds
What is required for icing to occur
4deg or below
visible moisture
What equiptment is required to fly into icing conditions
Windshield De-ice
Pitot Heat
Engine Anti-ice
Engine Inlet Anti-ice modulating valve
Ambient air sensing tube
What is required to fly into moderate Icing
icing equiptment plus blade de-ice
Full Anti-ice capability can not be provided under
10% Q
During icing conditions, pilots should avoid operations under
Low power requirements, cabin heater should be turned off before initiating a high rate of descent
Backup Hydraulic pump limitations
-54 -32 Continuous
33-38 24 On/72 Off
39-52 16on/48 off
APU Operating Limits
> 43 deg/rotor on- 30 mins
<51 deg/rotor off - continuous
APU oil hot- 30 min cool down
Windshield anti-ice check
not to be done >27deg
Intentional flight into severe turbulence/heavy icing
Prohibited
BFT Operating temperatures
-26degC to 71degC
-15degF to 160degF
During refuel operations CEF’s tanks should be filled to approx
3 inches below the forward edgeof the filler port
Authorized CEFS Configurations
2: Outboard
2: Inboard
4: One on each
Max Airspeed/FPM for volcano Jettison
110KIAS/500FPM
Level Flight CEFS Jettison envilope
0-120 <1Ball
120-VNE Centered
Descent CEFS Jettison Envilope
<80KIAS not Recommended
80KIAS-1000FPM
90KIAS- 875FPM
100KIAS- 750FPM
110KIAS- 625FPM
120KIAS- 500FPM
>120 KIAS- Not recommended
