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Sierra West Airlines > SA-227 Metroliner Limitations - Sierra West Airlines > Flashcards

SA-227 Metroliner Limitations - Sierra West Airlines Flashcards

1
Q

Engines

A

Garrett TPE331-11U-612G rated at 1000 SHP dry; 1100 SHP wet

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2
Q

Full Reverse Operations on Engines

A

limited to a speed below 90 KIAS.

*Subtract 1 kt for every 1 dF above 90 dF.

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3
Q

Allowed Fuel

A 
Jet A
Jet A-1
Jet B
JP-1
JP-4
JP-5
JP-8
*100LL
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4
Q

Limitations on 100LL

A

Not to exceed 250 gal per 100 hrs of operation

*total used limited to 7000 gal per engine overhaul.

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5
Q

Oil brand

A

BP2380

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6
Q

Hydraulic Brand

A

Brayco MIL-H-83282

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7
Q

Useable Fuel

A

648 gal / 4342 lbs

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8
Q

Max Fuel Imbalance

A

DOWTY - 500 lbs

McCauley - over 2000 lbs total, 200 lb imbalance; under 2000 lbs total, 400 lb imbalance.

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9
Q

When fueling how much fuel imbalance can you allow before switching to the other side?

A

125 gal

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10
Q

Can you takeoff with the “fuel transfer pump caution” annunciator(s) illuminated?

A

No. It’s prohibited.

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11
Q

CAWI (continuous alcohol water injection)

Time Limit

A

5 min

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12
Q

CAWI (continuous alcohol water injection)

Max Torque

A

110%

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13
Q

CAWI (continuous alcohol water injection)

Max EGT

A

650 dC

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14
Q

CAWI (continuous alcohol water injection)

Min OAT

A

-6 dC

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15
Q

CAWI (continuous alcohol water injection)

Approx. Freeze Point

A

-24 dC

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16
Q

CAWI (continuous alcohol water injection) is limited to what type of operations?

A

Takeoff Operations Only

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17
Q

CAWI (continuous alcohol water injection)

Max Usable Quantity

A

16 gal

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18
Q

CAWI (continuous alcohol water injection)

Min Usable Quantity

A

8 gal

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19
Q

CAWI (continuous alcohol water injection)

Dilution Ratio

A

40% Methanol / 60% Distilled Water

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20
Q

Do not use CAWI (continuous alcohol water injection) within 1 hour of temp reaching?

A

-24 dC or below

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21
Q

Temperature Limit - All Altitudes

Min for Engine Start

A

-40 dC

22
Q

Temperature Limit - All Altitudes

Max Temp

A

ISA +40 dC

23
Q

Temperature Limit - All Altitudes

Min for Engine Operation

A

-54 dC

24
Q

Starter Duty Cycle

A

First Attempt: 30 On, 60 Off
Second Attempt: 30 On, 60 Off
Third Attempt: 30 On, 15 minutes Off

25
Q

Max Continuous Load for EACH Generator

Ground Ops and Takeoff Ops to 1000’ AGL

A

200 amps

26
Q

Max Continuous Load for EACH Generator

Inflight

A

300 amps

27
Q

Max Continuous Load for EACH Generator

Cross Generator Start

A

100 amps

28
Q

Current Limiters:

Generator to Battery Bus

A

325 amps

29
Q

Current Limiters:

Battery Bus to L/R Essential Bus

A

225 amps

30
Q

Current Limiters:

Battery Bus to Non-Essential Bus Circuit Breaker

A

150 amps

31
Q

Voltage

A

28 V DC
26 V AC and 115 V AC
Battery: 24 V DC

32
Q

Temperature Limiter:

Max Altitude for Prolonged Operation

A

15k

33
Q

Temperature Limiter:

RPM with Bypass Open

A

99-101% OR 96-98%

*Do NOT takeoff with either fuel bypass valve failed open.

34
Q

Airstart Envelope:

Max Pressure Altitude with Boost Pumps Operating

A

20k

35
Q

Airstart Envelope:

Max Pressure Altitude without Boost Pumps Operating

A

12k

36
Q

Airstart Envelope:

Airspeed Limits for Airstart

A

100-180 KIAS

37
Q

Max EGT for Engine Start

A

770 dC for 1 sec

38
Q

Max Operating Pressure Altitude

A

31k

39
Q

SWA Max Operating Pressure Altitude

A

25k

40
Q

Avoid Engine RPM Between

A

18-28%

41
Q

Max Normal Cabin Differential Pressure

A

7 psi

42
Q

Relief Valves Open At:

A

7.25 psi

43
Q

Dump Valve Open At:

A

7.3 +/- 0.1 psi

44
Q

Mmo

A

0.52 Mach

45
Q

Wingspan

A

57’

46
Q

Tail Height

A

17’

47
Q

Length

A

59’ 3’’

48
Q

Min Required for 180 Degree Turn

A

98’

49
Q

Distance Between Outboard Main Tires

A

28’

50
Q

The maximum operating gross weight is limited by the MOST RESTRICTIVE of what three things?

A
  1. Maximum certified gross takeoff weights
  2. Single engine climb requirements
  3. Takeoff runway length requirements
51
Q

The landing weight is restricted by what three things?

A
  1. Max landing weight
  2. Landing distance available
  3. Braking energy limit

Sierra West Airlines (16 decks)

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