ATR 72 Limitations

What are the repair time frames for A, B, C & D items in a M E L? Does it include the date of discovery?

- A ... Specified in M E L. - B ... 3 days. - C ... 10 days. - D ... 120 days. Times frames do not include the date of discovery.

NAV mode for VOR approach with either Autopilot (AP) or Flight Director (FD) is authorized only if:

- A collocated DME is available. - DME HOLD is not selected.

When should you not use Autopilot and Yaw Damper in single source configuration (one ADC and/or one AHRS lost)?

- Below 1000 ft AGL. and. or. IAS below 160 knots; - Or. With stall warning inoperative.

The tcas (TCAS) must be turned T.A. ONLY in the following cases:

- Engine out operations. - Stick pusher/shaker failure. - Flight with landing gear down.

What are the crosswind limits for the various braking action values?

- Good: 35 knots. - Good to Medium: 28 knots. - Medium: 22 knots. - Medium to Poor: 16 knots. - Poor: 10 knots.

Engine Operating limits: OIL TEMP exemptions (°C)

- Ground Idle: -40 °C to 125 °C. - Maximum 140 °C limited to 20 minutes. - Starting: negative (-)54 °C minimum.

Engine Operating limits: HOTEL MODE

- ITT: 715 °C - OIL PRESS: 55 p.s.i. to 65 p.s.i. - OIL TEMP: 125 °C

Engine Operating limits: GROUND IDLE

- NH: 66 % minimum. - OIL PRESS: 40 p.s.i. minimum up to 75 % NH only. - OIL TEMP: -40°C to 125°C

Engine Operating limits: MAXIMUM CONTINUOUS. MCT definition.

- TIME LIMIT. None. MCT rating is the MAX power certified for continuous use. Only for in-flight emergencies use the MCT.

Engine Operating limits: RESERVE TAKEOFF

- TIME LIMIT: 10 minutes. Time beyond 5 minutes is for single-engine operations only. - TORQUE:100%. Value linked to 100% NP. - ITT: 800 °C. - NH: 103.2 %. - NL: 104.2 %. - NP: 101 %.

Engine Operating limits: NORMAL TAKEOFF

- TIME LIMIT: 5 minutes. - TORQUE: 90 %. Value linked to 100 % NP. - ITT: 765 °C. (below 15°C see chart) - NH: 101.9 %. - NL: 101.4 %. - NP: 101 %.

Engine Operating limits: MAXIMUM CONTINUOUS. MCT.

- TIME LIMIT: NONE. - TORQUE:90.9 %. Value linked to 100 % NP. - ITT: 800 °C - NH: 103.2 %. - NL: 104.2 %. - NP: 101 %.

Engine Operating limits, TRANSIENT values time-limited to 20 seconds:

- TORQUE: 120% - ITT: 840 °C. - NH: 106.4 %. - NL: 106.8 %. - NP: 106 %. - OIL PRESS: 40 p.s.i. to 100 p.s.i.

Maneuvering Limit Load Factors, gear and flaps retracted

-1 (g) gees, to 2.5 (g) gees

In case of smoke emission, the system protects the flight crew members during ...

... 15 minutes.

Maximum tire speed is ...

... 165 knots and if this limit is exceeded all tire must be replaced.

In the case of F.M.S. navigation capability degradation, leading to the loss of the required navigation performance, then ...

... crew must inform ATC and revert to alternate navigation means.

The following amber alert messages can be displayed on the ND (Navigation Display on MFD): UNABLE RNP, GPS INTEG or NAV D.R. (DR), then ...

... if alerts is triggered during the approach a Go Around must be initiated unless visual references are acquired and can be maintained.

The following amber messages can be displayed on the M.C.D.U.: (Multifunction Control Display Unit). R.N.P., P.O.S., H.I.L., or G.P.S., then ...

... if alerts is triggered during the approach a Go Around must be initiated unless visual references are acquired and can be maintained.

Maneuvering Limit Load Factors, gear and/or flaps extended

0 (g) gees, to 2.5 (g) gees

Maximum differential pressure for landing

0.35 p.s.i

Maximum differential pressure for OVBD VALVE full open selection

1 p.s.i

Minimum height for autopilot engagement:

100 feet

Minimum height for use of either autopilot or flight director when not during takeoff or approach:

1000 feet

Engine Operating limits, OTHER:

106 NP%. Authorized to achieve a flight provided that torque (TQ) does not exceed 75.2 % in (CLB) climb and 73.13 % in (CRZ) cruise. Max Oil Temp. 140 °C time-limited to 20 minutes.

Takeoff and Landing Tailwind limit

15 knots. 10 knots company limitation.

The general cabin illumination system must be on for not less than:

15 minutes before each flight.

Maximum Flaps Extended Operating Speeds VFE for FLAPS 30 (VFO)

150 knots (KIAS)

Minimum height for use of either autopilot or flight director when in CAT 1 (APP) approach mode:

160 feet

Minimum height for use of either autopilot or flight director when in V S or I A S mode during approach:

160 feet

Maximum Landing Gear Operating Speed (VLO RET) V.L.O., during gear retraction

160 knots (KIAS)

VWO, wiper operation speed.

160 knots (KIAS)

Maximum fuel imbalance both engines operating:

1609 pounds (LBS)

Maximum Landing Gear Extension Speed (VLO), V.L.O. LOW

170 knots (KIAS)

V.A. ( VA Maximum Design Maneuvering Speed)

175 knots (KIAS)

Maximum Flaps Extended Operating Speeds VFE for FLAPS 15 (VFO)

185 knots (KIAS)

Maximum Landing Gear Extended Speed (VLE) V.L.E.

185 knots (KIAS)

Max Load and Time Limits for (ACW GEN) AC "wild" Generator

20 (KVA) Kilovolt Amps, unlimited time. 30 (KVA) Kilovolt Amps, 5 minutes limited. 40 (KVA) Kilovolt Amps, 5 seconds limited.

Maximum altitude for one bleed off operation

20,000 ft

Maximum Operating Altitude

25,000 feet

Vmo / Mmo

250 KIAS / Mach 0.55

STARTER Limitation

3 starts within 1 minute 30 seconds maximum combined starter running time followed by 4 min OFF.

The maximum demonstrated crosswind for Takeoff and Landing FLAPS 30

35 knots (KIAS)

Max Load and Time Limits for DC GEN:

400 Amps, unlimited time. 600 Amps, 2 minutes limited. 800 Amps, 8 seconds limited.

Avoid static propeller operation between ____ % and ____ %NP.

41.6 % NP and 62.5 % NP.

Maximum fuel imbalance one engine inoperative:

440 pounds (LBS)

MAXIMUM ZERO FUEL Weight

46,296 pounds (LB)

MAXIMUM LANDING Weight

49,273 pounds (LB)

Maximum pressure during refueling

50 p.s.i or 3.5 bars

MAXIMUM TAKEOFF Weight

50,705 pounds (LB)

Max Load and Time Limits for (INV) Inverter:

500 (VA) Volts Amps, unlimited time. 575 (VA) Volts Amps, 30 minutes limited. 750 (VA) Volts Amps, 5 minutes limited.

MAXIMUM RAMP Weight

51,080 pounds (LB)

Engine Operating limits: OIL PRESSURE (PSI)

55 p.s.i to 65 p.s.i Only exemptions are: - GROUND IDLE. 40 p.s.i minimum; up to 75 % NH only. - TRANSIENT. 40p.s.i to 100 p.s.i limited to 20 seconds.

Total quantity of usable fuel in each tank:

5510 pounds (LBS)

Maximum differential pressure

6.35 p.s.i

Max Load and Time Limits for TRU:

60 Amps, unlimited time. 90 Amps, 5 minutes limited.

Avoid use of feather above

66.6 % (TQ) torque

How many passengers in aft before possible toppling in a otherwise empty aircraft?

7

What is the minimum pavement width for a 180 degree turn?

70.2 feet.

Engine Operating limits: STARTING

950 °C for 5 seconds, then 840°C for a further 15 seconds. Oil Temperature negative 54°C minimum.

Landing VMCL FLAPS 15

98 knots

Landing VMCL FLAPS 30

98 knots

Regarding the oxygen limitation graph, what pax oxygen consumption are made?

A 30% pax oxygen consumption is assumed.

What is a Minimum Equipment List (MEL)?

A list of items that may be inoperative for flight.

The tcas (TCAS) must be turned standby (STBY) in the following cases:

ATC request.

How many icing detection lights must be operative prior to flight into icing conditions?

All.

Flight (Atmospheric) Icing Conditions definition:

Atmospheric icing conditions exist when O.A.T. on the ground and for take-off is at or below 5°C or when T.A.T. in flight is at or below 7°C and visible moisture in the air in any form is present (such as clouds, fog with visibility of one mile or less, rain, snow sleet, and ice crystals).

One electric pump and associated jet pump are able to supply how many engines in the whole flight envelope?

Both engines. (Two)

Regarding the oxygen limitation graph, what is the reference temperature on the ground?

Cabin Temperature or O.A.T . (whichever is higher), On Ground.

Regarding the oxygen limitation graph, what is the reference temperature in flight?

Cabin Temperature, In-Flight.

Cargo door crosswind component limitation

Do not operate cargo door with a crosswind component of more than 45 knots.

If O.A.T .exceeds ISA + 25 in flight and you are operating with a single DC Generator, then:

Flight level must be limited to Flight Level 2 0 0.

Engine Operating limits: OIL TEMP (°C)

For Reserve Takeoff, Normal Takeoff, and Maximum Continuous: 0°C to 125°C

Ground Icing Conditions definition:

Ground icing conditions exist when the O.A.T. is at or below 5°C when operating on ramps, taxiways, and runways where surface snow, standing water, or slush is present.

Prohibited fuel types

J.P. 4. Jet B

Approved fuel types

Jet A & Jet A1. T.S. 1. R.T. J.P 5

Regarding the oxygen limitation graph, what time and altitude assumptions are made?

Minimum bottle pressure is required to cover a cabin depressurization at mid-time of the flight, an emergency descent from 25,000 ft to 13,000 ft within less than four (4) minutes, and a flight continuation at an altitude below 13,000 ft.

VMCL definition.

Minimum flight speed at which aircraft can be controlled with 5 ° bank in case of failure of the critical engine, the other being set at Go-Around power, landing flaps setting, gear extended, and which provides rolling capability specified by regulations.

What is one important limitation to know about the oil for the ATR?

Mixing of different brands of oil or viscosities of oil is not recommended.

Engine Operating limits, TRANSIENT value time limited to 5 seconds:

NP 120%.

Can you hold with any flaps extended in icing conditions?

No, except for single engine operations.

Can the ice detector be inoperative for flight into icing conditions?

No.

Is flight with an engine running and the propeller feathered permitted?

No.

Can you use the terrain display for navigation?

No; it's a situational awareness tool only.

Each electric pump is able to supply how many engines in the whole flight envelope?

One

Can the fight crew member remove his oxygen mask when required to use oxygen?

Only when necessary in connection with regular duties.

What is a CDL?

Stand for Configuration Deviation List. The CDL is a listing of regulator-approved non-structural external parts that may be missing but the airplane remains airworthy.

What is a NEF?

Stands for non-essential equipment & furnishings. Deals with inoperative, damaged or missing non-essential items located throughout the aircraft, and cosmetic items which are fully serviceable but worn.

If more than one MFC Module is failed, then:

Takeoff is PROHIBITED.

What must the pilot do to ensure he receives proper terrain alerting?

The current local QNH must be entered in the Pilot's altimeter for proper terrain alerting.

Engine Operating limits icing conditions: OIL TEMP (°C)

The flight crew must maintain the oil temperature above 45 °C in order to ensure protection for the engine air inlet against ice accumulation.

What must you do to avoid getting nuisance alerts from the TAWS?

The predictive TAWS functions must be inhibited when landing at an airport that is not included in the airport database.

Engine Operating limits, TRANSIENT definition:

Transient is defined as change in temperature caused by movement of the PLA or CLA or an altitude change.

The aircraft is certified in the transport category for day and night operations, in what conditions when the appropriate equipment and instruments required by the airworthiness and operating regulations are approved, installed, and in an operable condition?

VFR, IFR, Flight in Icing Conditions, and Reverse thrust taxi (Single or Twin Engine). NOTE: Silver Airways is not authorized to conduct Reverse Thrust Taxi operations.

Use of NP settings below_____% in icing conditions is prohibited.

below 82% NP

Maximum negative differential pressure

negative 0.5 p.s.i

Altitude range for the takeoff and landing environmental envelope:

negative 1000 ft to 8500 ft.

Temperature range for the takeoff and landing environmental envelope:

negative 35°C to 50°C

Maximum mean runway slope

plus or minus 2 % (±2 %)

Above what temperature must the flight crew maintain the oil temperature to ensure protection for the engine air inlet against ice accumulation?

positive (+) 45 °C