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Systems (Book 1) Flashcards

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1
Q

T6NL caption trigger conditions inflight

A
  • T6 20degC greater than the scheduled limiting value
  • NH >106%
  • NL >112%
  • T6 >860degC during a relight
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2
Q

T6NL caption trigger conditions during ground start

A

T6 greater than 657 degC

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3
Q

Min interval between ground engine starts, and why

A

Minimum 2 minutes to allow for fuel drainage

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4
Q

OIL caption nuisance prevention delay time

A

10 +/-2 sec
(Except with gear down)

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5
Q

Ground vs Flight idle RPM delta

A

Ground idle scheduled 3% lower than flight idle

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6
Q

When will FPR caption go out when on the ground?

Not including malfunctions

A
  • For 30sec when relight button is pressed to check igniters
  • When an APU start is initiated
  • When engine is shutdown

These are only true with no external power applied

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7
Q

How long should ENG START switch be set to OFF before being reselected on?

A

1 min

If reselected on after 1-2sec, the APSCU may log an underspeed fault

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8
Q

When will bleed valve close on start

A

When RPM reaches 2% below the scheduled ground idle NH.

Will remain closed until below 48% & is always commanded closed >70% NH

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9
Q

When does bleed valve open

A

When RPM drops below 48% NH.

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10
Q

Start sequence: When will APU automatically shutdown

A

If it doesn’t reach 79-81% within 34sec of start being initiated

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11
Q

When will engine start sequence be automatically cancelled

A

If RPM doesn’t reach 45% within 45sec of ENG START switch being set to START

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12
Q

If the IGN switch is at ISOLATE, how can the APU be started

A

By setting ENG START switch to START

Cannot be started by pushing the relight button with IGN at ISOLATE

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13
Q

At what airspeed does the rudder become effective

A

50 KCAS

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14
Q

AoA to trigger the stall tone

A
  • 10.5 units
  • Phase advance function will trigger at a lower AoA if the rate of onset is high enough

Maximum advance is 2 units, ie. min AoA for tone is actually 8.5

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15
Q

AoA for constant stall tone alarm

A
  • 14 units
  • Phase advance function will trigger at a lower AoA if the rate of onset is high enough

Maximum advance is 2 units, ie. min AoA for tone alarm is actually 12

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16
Q

What are the two considerations for an abort above Vstop

From Part 3 (HANDLING)

A
  • EMBS should be observed unless this will delay braking to less than 5000’ from the end of the ASDA
  • Throttle should be closed due to the engine’s high idling thrust
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17
Q

At what temp/humidity could icing conditions occur

A

Temp +6degC or less, and relative humidity is 50% or more

Keep ground running time to a minimum in icing conditions

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18
Q

How long will igniters activate for if a surge is detected

A

15sec

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19
Q

Glide speed/AoA

A
  • Below 25,000’: 5 AoA (=190KCAS at half fuel)
  • Above 25,000’: M0.65

To allow windmilling, assisted relight, reduce misting, save battery

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20
Q

Recommended turbulence penetration speed

A

300 - 325 KCAS

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21
Q

Except in an emergency, what is the max speed to jettison a streamed brakechute

A

50 KCAS

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22
Q

Engine start EEC automatic cancel conditions

A
  • NH does not exceed 30% within 25sec of reaching 10%
  • NH does not exceed idle-2% within 90sec of reaching 10%
  • T6 exceeds 647degC
  • T6 exceeds 607degC for >15sec
  • T6 exceeds 607degC and is rising at >80degC per second
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23
Q

What is the purpose of an engine dry crank

A
  • Cool the turbine
  • Allow excess fuel to drain
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24
Q

How long does the fire detection system take to reset following activation

A

Up to 45sec

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25
How long do igniters automatically energise for in the event of a flameout
- Until 45% NH is achieved - If relight is initiated above 45%, they will activate for 10sec
26
How long does the IGN indicator stay on for following a successful automatic relight
4sec | NOTE: IGN indicator may extinguish prior to reaching flight idle RPM
27
Why is the minimum RPM for an immediate relight 10%?
Below 6% NH there may be inadequate fuel delivery for a successful relight, and the EMP is blank below 10%.
28
What results from pressing the relight button
- If ENG START switch is on: APU will attempt to start - Main Generator trips offline - Igniters are activated for 30sec, provided throttle is at/just above IDLE - DC starter pump activates
29
When is No.2 HYD system automatically offloaded on shutdown/flameout
42% RPM
30
With both Generators offline, how long *should* the batteries last
Approx 17.5min | Assumes load shedding, and only one APU start attempt
31
Double Gen/DC Bus Tie: By what voltage should LG and Flap be deployed
Prior to reaching 21V
32
Double Gen/DC Bus Tie: What happens to BUOXY as voltage drops
As voltage approaches 20V, reversion to BUOXY is automatic. | Descend <10,000' before oxygen is depleted
33
Double Gen/DC Bus Tie: At what voltage will the HDFD cease to operate
18V
34
Conditions for FUEL caption
160 +- 25kg in -ve G compartment for at least 10sec | If caption activated with flap or gear out, it will remain on
35
When will EMP fuel TOTAL and CL indications flash
Internal fuel less than 1090kg, and C/L tank>25kg | EMP will indicate internal contents only
36
With a C/L tank transfer failure, when will the TOTAL and CL indications on the EMP stop flashing
Once either the internal fuel increases back above 1225kg, *or* the C/L contents reduces below 25kg
37
What does a TRANS caption indicate
Fuel transfer air pressure is below normal
38
When is the OXFLW caption inhibited
- When BUOXY is operating - When cabin alt <10,000 +-1000'
39
When will the CPR caption illuminate
- If cabin alt exceeds 23,650 +-410 ft - When cabin conditioning control is switched off
40
If flaps are selected down but only 3/4 is indicated, what is the possible cause and fix (non-hydraulic related)
- SMP may have erroneously energised the flap-restrict relay - Set MASS to SAFE for 2sec then back to LIVE | CAUTION associated with this note is regarding AIM9 seeker head damage
41
What conditions cause the GEAR caption | "Gear not down, gear not down"
- CAS <160kt - Alt <5000' - RPM <85% NH | Initiated by the PDMC, i.e. warning not generated in reversionary mode
42
What causes a red gear handle light to remain illuminated with 3 Greens
- Explosive start valve for the standby lowering systems are not electrically connected, or - the downlock circuit is unserviceable
43
If the nosewheel fork black line is not below the red lines, what is the cause and possible effect
Cause: Oleo extension is incorrect - Nosewheel may not be able to castor - WoW micro may not operate - NWS unavailable
44
How long should brakechute switch be set STREAM before back to JETT/NORM during an uncommanded airborne deployment
5sec minimum
45
Cause of an audio "Stall warning system, stall warning system" with no other indications
AoA probe potentiometer voltage out of limits | Failure of the interface between AoA probe and MC's
46
For an INU reset, how long should the switch be OFF before recycling back on
30sec
47
For a PDMC or SDMC reset, how long should the switch be OFF before recycling back on
- Book 1 states minimum 4sec - Book 2 states for ground reset, minimum is 5sec
48
Min NH RPM at THOTTLE-SLAM on departure
- <24degC: 96% - >24degC: 97%
49
Established spin characteristics
- 5sec per turn - 1500' loss per turn - Approx 60deg ND
50
Spin recovery height loss
Approx 2,500' | Add another 4,000' for a 3.5G pull to level
51
Basic Aircraft Mass
4580kg
52
Fuel quantity at start (C/line fitted)
1619kg
53
AP Caption remaining on after start: possible causes and fix
- Could be because the trim check was started during the AP IBIT, or due unloaded start - Fix is to cycle the STBY trim guard once airborne | Cannot be reset on the ground
54
Left side HYD system
HYD2
55
Right side HYD system
HYD1
56
Left side U/C bay gauges
- HYD2 accumulator: 1,100psi - STBY gear: 3,300psi - STBY flap: 3,300psi | All at 20degC OAT
57
Right side U/C bay gauges
- HYD1 accumulator: 1,100psi at 20degC - Wheelbrake accumulator: min 2,800psi
58
Left side HYD reservoir system and indication
- HYD2 - 256 (fluid temp 0 to 30degC) - 262 (fluid temp above 30degC) +/-6psi
59
Right side HYD reservoir system and indication
- HYD1 - 281 (fluid temp 0 to 30degC) - 293 (fluid temp above 30degC) +\-6 cu in | With wheelbrake accumulator fully depressurised
60
Combat flap auto deploy/retract speeds
- Auto deploy at 340+-5kts - Auto retract at 350+-5kts
61
Brake pressure to check for during pre-landing cx
- 1250-1450psi - Then <150
62
What are the 4 captions that should illuminate, then extinguish 10sec later after turning on the batts?
SRG T6NL EEC GO
63
Min voltage during the battery check?
23V
64
How long should the FPR Caption extinguish for after pressing the igniter button during pre-start cx?
30sec
65
Max time after APU caption on for the IGN indicator during engine start?
IGN on within 15sec
66
Max time from throttle-idle to light up during engine start
Light up within 25sec
67
At what RPM should the IGN indicator extinguish during engine start?
Approx 45%
68
Stabilised RPM and T6 after start (and FADEC checks complete)
Approx 53%, 400degC
69
Max time the Oxy PBIT should take before caption extinguishes after start
Up to 5min
70
Altimeters QNH elevation check limits
HUD +- 20' HDFD +- 25' BaroAlt +-75'
71
Min Nh RPM on RWY full power check
96% 97% if OAT>25degC (Within 20sec)
72
EEC check on engine shutdown?
EEC caption remains off as RPM drops below 51%
73
C/LINE tank fuel quantity
344kg
74
Internals fuel capacity
1275kg
75
Brakes ‘S’ pressure requirement to be boxed
Pressure 2,755 to 3150psi
76
Brakes ‘S’ unboxed trigger conditions
Pressure between 1,250 and 2,755psi, OR Above 3,150psi
77
When will brakes ‘S’ be flashing in the HUD
Pressure below 1,250psi
78
Standby Gear/Flap system nitrogen pressure
3,300 +- 50psi
79
JPOHT caption trigger temp
150degC
80
At what T6 will the EMP flash
When T6 exceeds 999degC
81
HOOD Caption RPM trigger
81 +/- 2% Nh
82
Number of oil pumps
1 supply, 3 return
83
VSU definition/function
Voltage Sensing Unit Monitors Main DC Busbar voltage, controls the bus-tie contactor (connects 28V DC Essential Services bus to Main DC Bus if >26V is sensed)
84
Left side undercarriage bay accumulators and min pressures? (Left to right)
Emergency Flap - 3000 PSI Emergency Gear - 3300 PSI No 2 Flying Controls - 1100 PSI
85
Right side undercarriage bay accumulators and pressures? (Left to right)
No 1 Flying Controls - 1100PSI Wheelbrake accumulator - 1250PSI

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