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1
Q

8 reasons for FADEC shutdown

A

1.) ECL aft of start
2.) Ng over speed
3.) Np over speed
4.) no light off detection on eng start
5.) stagnated start or flameout on eng start
6.) failure of second FADEC and Ng speed <59%
7.) failure to relight on flameout detection
8.) MGT > 779 on Eng start

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2
Q

Coanda auto activated when?

A

1.) Qe <28%
2.) Ng >67%
3.) nacelle angle >52 deg
4.) MGT < 593
5.) NIU receives WOW indication

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3
Q

Main purpose of the inner outer loop?

A

Maintain Nr

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4
Q

When does the temperature switch shutdown FADEC B?

A

> 80 deg C

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5
Q

FADEC B override switch

A

Overrides the shutdown of FADEC B from temps over 80

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6
Q

Purpose of the FPMU

A

Controls fuel pressure and flow as well as the CVG actuator in response to signals from the FADECs

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7
Q

AVVs?

A

Air vent valves purge air in the fuel pump outlet during engine start

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8
Q

PMAs power what?

A

Exciters, FADECs, FPMU, and other engine electrical components

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9
Q

PMAs provide sufficient power to drive the ignition system at all speeds above ____% Ng and to power FADECs at a min of ____% Ng

A

10%

50%

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10
Q

Engine oil tank quantity

A

3 gallons

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11
Q

Engine oil gauge yellow region is displayed as green for the first ____ min of weight off wheels due to _____

A

15

Gulping

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12
Q

Interim power on?

A

Nac < 70
Aspd < 60

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13
Q

An engine restart cannot be initiated until Ng is below ____%

A

29%

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14
Q

EAPS auto mode on ____ and off ____

A

On: < 60 KCAS
Off: > 70 KCAS

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15
Q

How many thermocouples? Why?

A

14; 7 per FADEC

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16
Q

What do monopole sensors measure?

A

Qe and secondary Np

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17
Q

Where does the starter get power from?

A

Hyd 3

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18
Q

What happens at 2.5% Ng?

A

AVV/ ABVs Open

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19
Q

Main purpose of the drive system?

A
  • transmit torque from the engines to the proprotors
  • provide synchronization of the props
  • provide power for electrical, hydraulic, and pneumatic powers
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20
Q

What is mounted on the MWGB?

A

Rotor break
RPU
CFG 1
VFG 4
SDC
APU
oil cooler
Hyd 3

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21
Q

When does the RADALT declutter?
Disappear?

A

1,000 ft

10,000 ft

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22
Q

Purpose of DSIU?

A

Monitor chip burn and ELS

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23
Q

when does ELS kick in? Turn off?

A

PRGB oil pressure drops below 30 psi

Off at 35 psi

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24
Q

Hard Braking: ____
Light braking: ____

A

< 20 KCAS
< 60 KCAS

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25
Wing feed tanks designed to maintain a ___ min supply of fuel
30
26
8 major functions of the FMU
- measure fuel quantity - manage fuel burn sequence - manage ground/ aerial refueling defueling and fuel dump - monitor fuel sys health and isolate component faults - communicate sys status to GRDP - communicate sys status to avionic system - communicate fuel status to SFD - communicate low engine/ gearbox oil levels to the GRDP and maintenance flight summary page
27
Max touchdown speed for a ROL?
88 GS
28
MLG bay fire indications?
No indications
29
LG isolation valve closed?
-WOW -up / down and locked - airspeed > 180 KCAS - hyd 3 detects a leak
30
Out of range switch for nose wheel
70 deg from center
31
Max airspeed down for LG
150 KCAS
32
Max airspeed with gear retracting or extending
140 KCAS
33
Sink rate > 46,000 lbs
600 fpm
34
Sink rate < 46,000 lbs
720 fpm
35
What allows Hyd 3 to pressurize all systems?
Ground checkout valve
36
HYD PRESS LO comes on < ____
4600 psi
37
What Nr does Hyd 1 and 2 begin pressurizing their respective systems? What valve sends Hyd 3 back?
58% Nr Fluid compensation valve
38
Hyd 1 and 2 detection levels
30, 40, 50 in ^2
39
Hyd 3 detection levels
45, 60 in ^2
40
How many INSs
3, one per FCC
41
Stall warning is only produced for what nacelle angles?
0-35 deg
42
If the cabin doors are not locked, the nacelles don’t go past ___
45 degrees
43
Max flaps?
73 deg
44
Can you fly with out VSLED sensors operational?
No
45
Before a PAC, operate engine for ___ min with MGT > ____
5 min; 620 deg
46
SDC provides air to…
OBIGGS/ OBOGS air cooling Over pressurization Wing de icing Particle scavenging
47
Heading hold < ___ KCAS Coordinated turn > ____ KCAS
45 50
48
Opposed lateral cyclic
4 degrees to reduce downwash over wings and improve power
49
Max angle of bank
60 deg
50
Which FADEC is located inner of the firewall
FADEC B
51
Beta gorverning
The engine is unable to keep up with PDS and the rotors begin to slow, to compensate, they take pitch out and spin the rotor back up and reintroduce pitch
52
Starter drops out at ___ % Ng
57
53
____ ft diameter rotor blades
38 ft
54
Primary path through rotor blade? Secondary?
Primary CV joint Secondary Beam
55
Pitch horns are connected to ….
Trailing edge of proprotor
56
Blade twist
47.5
57
84% Nr limited to ___ KCAS or ___ mach 100% Nr limited to ____ KCAS or ___ mach
280 KCAS/ .48 mach 220 KCAS / .46 mach
58
How wide is the CV
85 ft
59
ICDS upward tilt ___ and forward wing sweep ____
3.5 deg 6 deg
60
What happens if the SDC gets a chip
Shuts down
61
Parameters for BFWS
WOW ECLs off Nr 0 deg Rotor brake off
62
INS drift rate
.8 nm/ hr
63
Enhanced Interrupted Alignment
Reduces INS drift rage from .8 to .5 nm/ hr by doing a 90 deg turn during alignment
64
GPS and INS must be accurate within ____
300 ft or .05 min

TILT (28 decks)

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