Ch5 Limits Flashcards
Any time an operational limit is exceeded, an appropriate entry shall be made on DA FORM __________________. Entry will state what limit or limits were exceeded, range, time beyond limit and any additional data that would aid maintenance personnel in the maintenance action that may be required.
2408-13-1
The minimum crew required to fly the helicopter is a ___________________________________.
Pilot and a copilot
The minimum crew required for maintenance ground runs {engine(s) running} is a ______________ _______ ___________ occupying the ______ station. A __________ ___________ may be authorized to occupy the CPG station during ground maintenance at the discretion of the_________________.
Maintenance Test Pilot
PLT’s
Technical observer
Commander
Rotor Speed (NR) Limitations
LIMITS- NR (%) Digital Readouts
________ Maximum (__ ____ ____)
________ Transient (___________)
________ High rotor warning annunciated (___________)
________ Normal (__________)
________ Low rotor warning annunciated (_____________)
________ Transient (__________)
Rotor Speed (NR) Limitations
LIMITS- NR (%) Digital Readouts
110 Maximum (>110 red)
105-110 Transient (yellow)
105 High rotor warning annunciated
97-104 Normal (green)
96.5 Low rotor warning annunciated
0-96 Transient (red)
NOTE It is normal for oil pressure to be high during first start when oil is cold. Oil pressure should return to formal limits after ___ ___________ of operation at idle. Do not accelerate above ground idle until oil pressure can be held at or below maximum limit throughout the acceleration.
LIMITS- ENG1 or 2 OIL PRESSURE (PSI)
________ Maximum (______________________)
________ Normal (____________)
________ Minimum (_________________)
5 minuets
LIMITS- ENG1 or 2 OIL PRESSURE (PSI)
120 Maximum (>120 red w/box)
23-120 Normal (green)
23 Minimum (<23 red)
Hydraulic Systems. Primary (PRI) utility (UTIL), and accumulator (ACC) hydraulic (HYD) pressure (PSI)
LIMITS- HYDRAULIC PRESSURE (PSI)
_________ Transient- permitted for __________ (________)(___________________)
_________ Transient- permitted for __________ (________) (___________________)
_________ Normal (__________)
_________ Minimum (___________________)
LIMITS- HYDRAULIC PRESSURE (PSI)
>3410 Transient- permitted for 5 sec (yellow) (≥5sec red w/box)
3310-3400 Transient- permitted for 5 min (yellow)( ≥5min red w/box)
2700-3300 Normal (green)
1260 Minimum (<1260 red w/box)
WARNING: Once the EMERG HYD button is pressed on, it must remain on. Flight control inputs and elevated G loading must be kept to a minimum. Aircrew will not be able to move the flight controls when the Accumulator (ACC) Hydraulic Pressure drops below approximately ________ ______.
1650 PSI
Engine Starter Limitations: The Air Turbine Starter (ATS) is capable of making the number of consecutive start cycles listed below, when exposed to the environmental conditions specified, with an interval of at least ___ ___________ between the completion of one cycle and the beginning of the next cycle. A starting cycle is the interval from start initiation and acceleration of the output driveshaft, from ______ rpm, to ________ _______________. The ____________ delay between start attempts applies whe the first attempt is aborted for any reason and it applies regardless of the duration of the first attempt. If motoring is required for an emergency, the ___________ delay does not apply.
60 sec
0 RPM, to starter dropout
60 sec
60 sec
Engine Starts at Ambient Temperatures of _______________ and below. _____ consecutive start cycles may be made, followed by a ___ __________ rest period, followed by _____ additional consecutive start cycles. A ____ __________ rest period is then required before any additional starts.
61F (16C)
Two
3 minuet
Two
30 minuet
Engine Starts at Ambient Temperatures above ______________. ______consecutive start cycles may be made. A _____ ___________ rest period is then required before any additional starts.
61F (16C)
Two
30 minuet
Dual Engine Starts. Dual engine starts are _____________ due to insufficient ________ ______.
Prohibited
IPAS Air
Engine Temperature Limitations. Engine Turbine Gas temperature (TGT oC)
Note: Each engine incorporates a TGT limiter control which limits engine operation according to the following indicated TGT value:
Dual Engine: _____________oC
Single Engine: _____________oC
LIMITS- 701D TGT (oC) Digital Readouts
Maximum (______________)
Transient ___________ (___________)
Contingency, __________ (__________)
Max rated power _______________ (_____________)
Maximum during start
Intermediate rated power, __________ (_____________)
Maximum continuous power
Normal (_____________)
Engine Temperature Limitations. Engine Turbine Gas temperature (TGT oC)
Note: Each engine incorporates a TGT limiter control which limits engine operation according to the following indicated TGT value:
Dual Engine: 879 ±5o C
Single Engine: 903 ±5o C
LIMITS- 701D TGT (oC) Digital Readouts
949 Maximum (>949 red)
904-949 Transient 12 sec (yellow)
880-903 Contingency, 2.5 min (yellow)
847-879 Max rated power 10 min (yellow)
851 Maximum during start
794-846 Intermediate rated power, 30 min (yellow)
793 Maximum continuous power
0-793 Normal (green)
Engine Power Turbine Speed (Np)
Note: It is not abnormal to observe a Np split between ENG1 and ENG2 during autorotational descent when the engines are fully decoupled from the transmission. An increase from ______ to______ is possible. Note: Maximum Np vertical tape indication is ______.
100% to 105%
120%
Engine Power Turbine Speed (Np)
LIMITS- ENG1 OR 2 Np (%) Digital Readouts
_______ Maximum (___________________)
_______ Engine overspeed annunciated
_______ Transient, _________ (______________ _______________)
_______ Normal (__________)
Engine Power Turbine Speed (Np)
LIMITS- ENG1 OR 2 Np (%) Digital Readouts
119 Maximum (>119 red w/box)
114 Engine overspeed annunciated
104-119 Transient, 12 sec (yellow, w/box at 114)
0-103 Normal (green)
Engine Torque
LIMITS- TORQUE (%) Digital Readouts with NR < ____%
______ Maximum (_____________)
______ Normal (__________)
LIMITS- TORQUE (%) Digital Readouts with NR < ____%
_____ Maximum (____________)
_____ Normal (__________)
Engine Torque
LIMITS- TORQUE (%) Digital Readouts with NR < 50%
30 Maximum (>30 red)
0-30 Normal (green)
LIMITS- TORQUE (%) Digital Readouts with NR < 90%
70 Maximum (>70 red)
0-70 Normal (green)
ENGINE Torques - Dual Engine
LIMITS- TORQUE (%) Digital Readouts - DE
_______ Maximum (_____________)
_______ Transient ________(___________)
_______ Normal (___________)
LIMITS- TORQUE (%) Digital Readouts - DE
115 Maximum (>115 red)
101-115 Transient 6 sec (yellow)
0-100 Normal (green)
ENGINE Torques - Single Engine
LIMITS- TORQUE (%) Digital Readouts - SE
______ Maximum (_____________)
______ Transient ___________ (___________)
______ Single engine contingency______ (_______)
______ Single engine MCP (___________)
______ Normal (__________)
ENGINE Torques - Single Engine
LIMITS- TORQUE (%) Digital Readouts - SE
125 Maximum (>125 red)
121-125 Transient 6 sec (yellow)
111-120 Single engine contingency 2.5 min (yellow)
110 Single engine MCP (green)
0-110 Normal (green)
AUXILIARY POWER UNIT (APU) OPERATING LIMITS: CAUTION: Avoid prolonged operation at _____ -______ NR with the APU running. The APU clutch will oscillate from __________ to __________. This creates high loads on the clutch and shall be avoided.
a. APU operation is ___________ during normal flight. After a fault or aborted start, wait ___ _______ after APU has stopped before attempting another start. After ___ consecutive start attempts, wait ____ ___________ before a third start attempt. No more than ___ start attempts are permitted in ______ _________.
b. During prolonged ground operations greater than ___ ________, observe XMSN TEMP 1 and XMSN TEMP 2 on the SYS page. If the temperatures exceed _____oC, the APU shall be shut down and the transmission fluid allowed to cool for ____ __________ prior to resuming APU ground operations; or transmission fluid may be cooled by operating an engine with rotor turning.
94% - 96%
Engaged ; disengaged
a. Prohibited
30 sec
Two
20 min
Three
One hour
b. 30 min
140*C
30 min