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Work > Systems (Book 1) > Flashcards

Systems (Book 1) Flashcards

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
Q

How long do igniters automatically energise for in the event of a flameout

A
  • Until 45% NH is achieved
  • If relight is initiated above 45%, they will activate for 10sec
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26
Q

How long does the IGN indicator stay on for following a successful automatic relight

A

4sec

NOTE: IGN indicator may extinguish prior to reaching flight idle RPM

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27
Q

Why is the minimum RPM for an immediate relight 10%?

A

Below 6% NH there may be inadequate fuel delivery for a successful relight, and the EMP is blank below 10%.

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28
Q

What results from pressing the relight button

A
  • 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
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29
Q

When is No.2 HYD system automatically offloaded on shutdown/flameout

A

42% RPM

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30
Q

With both Generators offline, how long should the batteries last

A

Approx 17.5min

Assumes load shedding, and only one APU start attempt

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31
Q

Double Gen/DC Bus Tie: By what voltage should LG and Flap be deployed

A

Prior to reaching 21V

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32
Q

Double Gen/DC Bus Tie: What happens to BUOXY as voltage drops

A

As voltage approaches 20V, reversion to BUOXY is automatic.

Descend <10,000’ before oxygen is depleted

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33
Q

Double Gen/DC Bus Tie: At what voltage will the HDFD cease to operate

A

18V

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34
Q

Conditions for FUEL caption

A

160 +- 25kg in -ve G compartment for at least 10sec

If caption activated with flap or gear out, it will remain on

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35
Q

When will EMP fuel TOTAL and CL indications flash

A

Internal fuel less than 1090kg, and C/L tank>25kg

EMP will indicate internal contents only

36
Q

With a C/L tank transfer failure, when will the TOTAL and CL indications on the EMP stop flashing

A

Once either the internal fuel increases back above 1225kg, or the C/L contents reduces below 25kg

37
Q

What does a TRANS caption indicate

A

Fuel transfer air pressure is below normal

38
Q

When is the OXFLW caption inhibited

A
  • When BUOXY is operating
  • When cabin alt <10,000 +-1000’
39
Q

When will the CPR caption illuminate

A
  • If cabin alt exceeds 23,650 +-410 ft
  • When cabin conditioning control is switched off
40
Q

If flaps are selected down but only 3/4 is indicated, what is the possible cause and fix (non-hydraulic related)

A
  • 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
Q

What conditions cause the GEAR caption

“Gear not down, gear not down”

A
  • CAS <160kt
  • Alt <5000’
  • RPM <85% NH

Initiated by the PDMC, i.e. warning not generated in reversionary mode

42
Q

What causes a red gear handle light to remain illuminated with 3 Greens

A
  • Explosive start valve for the standby lowering systems are not electrically connected, or
  • the downlock circuit is unserviceable
43
Q

If the nosewheel fork black line is not below the red lines, what is the cause and possible effect

A

Cause: Oleo extension is incorrect
- Nosewheel may not be able to castor
- WoW micro may not operate
- NWS unavailable

44
Q

How long should brakechute switch be set STREAM before back to JETT/NORM during an uncommanded airborne deployment

A

5sec minimum

45
Q

Cause of an audio “Stall warning system, stall warning system” with no other indications

A

AoA probe potentiometer voltage out of limits

Failure of the interface between AoA probe and MC’s

46
Q

For an INU reset, how long should the switch be OFF before recycling back on

A

30sec

47
Q

For a PDMC or SDMC reset, how long should the switch be OFF before recycling back on

A
  • Book 1 states minimum 4sec
  • Book 2 states for ground reset, minimum is 5sec
48
Q

Min NH RPM at THOTTLE-SLAM on departure

A
  • <24degC: 96%
  • > 24degC: 97%
49
Q

Established spin characteristics

A
  • 5sec per turn
  • 1500’ loss per turn
  • Approx 60deg ND
50
Q

Spin recovery height loss

A

Approx 2,500’

Add another 4,000’ for a 3.5G pull to level

51
Q

Basic Aircraft Mass

A

4580kg

52
Q

Fuel quantity at start (C/line fitted)

A

1619kg

53
Q

AP Caption remaining on after start: possible causes and fix

A
  • 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
Q

Left side HYD system

A

HYD2

55
Q

Right side HYD system

A

HYD1

56
Q

Left side U/C bay gauges

A
  • HYD2 accumulator: 1,100psi
  • STBY gear: 3,300psi
  • STBY flap: 3,300psi

All at 20degC OAT

57
Q

Right side U/C bay gauges

A
  • HYD1 accumulator: 1,100psi at 20degC
  • Wheelbrake accumulator: min 2,800psi
58
Q

Left side HYD reservoir system and indication

A
  • HYD2
  • 256 (fluid temp 0 to 30degC)
  • 262 (fluid temp above 30degC)
    +/-6psi
59
Q

Right side HYD reservoir system and indication

A
  • HYD1
  • 281 (fluid temp 0 to 30degC)
  • 293 (fluid temp above 30degC)
    +-6 cu in

With wheelbrake accumulator fully depressurised

60
Q

Combat flap auto deploy/retract speeds

A
  • Auto deploy at 340+-5kts
  • Auto retract at 350+-5kts
61
Q

Brake pressure to check for during pre-landing cx

A
  • 1250-1450psi
  • Then <150
62
Q

What are the 4 captions that should illuminate, then extinguish 10sec later after turning on the batts?

A

SRG
T6NL
EEC
GO

63
Q

Min voltage during the battery check?

A

23V

64
Q

How long should the FPR Caption extinguish for after pressing the igniter button during pre-start cx?

A

30sec

65
Q

Max time after APU caption on for the IGN indicator during engine start?

A

IGN on within 15sec

66
Q

Max time from throttle-idle to light up during engine start

A

Light up within 25sec

67
Q

At what RPM should the IGN indicator extinguish during engine start?

A

Approx 45%

68
Q

Stabilised RPM and T6 after start (and FADEC checks complete)

A

Approx 53%, 400degC

69
Q

Max time the Oxy PBIT should take before caption extinguishes after start

A

Up to 5min

70
Q

Altimeters QNH elevation check limits

A

HUD +- 20’
HDFD +- 25’
BaroAlt +-75’

71
Q

Min Nh RPM on RWY full power check

A

96%
97% if OAT>25degC

(Within 20sec)

72
Q

EEC check on engine shutdown?

A

EEC caption remains off as RPM drops below 51%

73
Q

C/LINE tank fuel quantity

A

344kg

74
Q

Internals fuel capacity

A

1275kg

75
Q

Brakes ‘S’ pressure requirement to be boxed

A

Pressure 2,755 to 3150psi

76
Q

Brakes ‘S’ unboxed trigger conditions

A

Pressure between 1,250 and 2,755psi, OR
Above 3,150psi

77
Q

When will brakes ‘S’ be flashing in the HUD

A

Pressure below 1,250psi

78
Q

Standby Gear/Flap system nitrogen pressure

A

3,300 +- 50psi

79
Q

JPOHT caption trigger temp

A

150degC

80
Q

At what T6 will the EMP flash

A

When T6 exceeds 999degC

81
Q

HOOD Caption RPM trigger

A

81 +/- 2% Nh

82
Q

Number of oil pumps

A

1 supply, 3 return

83
Q

VSU definition/function

A

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
Q

Left side undercarriage bay accumulators and min pressures? (Left to right)

A

Emergency Flap - 3000 PSI
Emergency Gear - 3300 PSI
No 2 Flying Controls - 1100 PSI

85
Q

Right side undercarriage bay accumulators and pressures? (Left to right)

A

No 1 Flying Controls - 1100PSI
Wheelbrake accumulator - 1250PSI

Work (11 decks)

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