ATR 72 Limitations

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ATR 72 Limitations
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2011-05-20 07:07:55
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ATR 72 Limitations
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  1. Types of Aircraft Operations
    This airplane is certificated in the Transport Category under FAR Parts 25, 36, JAR 25 and ICAO 16. When the appropriate equipment and instruments, as required by the airworthiness and operating regulations are approved, installed and in operable condition, flight in the following conditions are approved.

    • * Day and Night
    • * VFR and IFR
    • * Flight in icing conditions
    • * Reverse thrust taxi (single and two engine)

    • Warning
    • The airplane is prohibited from flight into severe icing conditions, which are outside of the certification envelope. In case of inadvertent encounter, refer to the Severe Icing Emergency Procedure, [ICE]
  2. Altitude
    Maximum Operating Altitude
    Minimum Takeoff and Landing Altitude
    Maximum Takeoff and Landing Altitude
    • Maximum Operating Altitude........................25,000 ft.
    • Minimum Takeoff and Landing Altitude..........-1000 ft.
    • Maximum Takeoff and Landing Altitude..........8,500 ft.
  3. Limiting tailwind component
    Limiting tailwind component............................10 kts.

    • Note
    • Tailwind operations with up to 15 kts. are approved only when airport analysis supporting greater than 10 kts. of tailwind is provided.
  4. Maximum Demonstrated Crosswind component on a Dry Runway (kts.)
    • Takeoff..............................................................35 kts.
    • Landing..............................................................35 kts.
  5. Maximum Operating (Mach) Mmo
    Mach .55
  6. Maximum Operating (KIAS) Vmo
    250 KIAS
  7. Landing Gear Extension VLO(ext)
    170 KIAS
  8. Landing Gear Retraction VLO(ret)
    160 KIAS
  9. Landing Gear Extended VLE
    185 KIAS
  10. Flap Placard Speeds VFE15 & VFE30
    15
    30o
    • 15 - 185
    • 30 - 150
  11. Maximum Rough Air Penetration VRA
    VRA - 180 KIAS
  12. Maximum Maneuvering VA
    VA - 175 KIAS
  13. Maximum Wiper Operating
    160 KIAS
  14. Cabin Pressurization:

    Max Diff
    Min Diff
    Max Diff w/ for overboard valve full open selection
    • Max Diff..........................................................6.35 psi
    • Min Diff............................................................-0.5 psi
    • Max Diff for overboard valve full open selection..1 psi
  15. Autopilot/Flight Director Limitations
    • A flight director mode must be selected prior to autopilot engagement.
    • Minimum height for autopilot engagement after takeoff will be 500ft. AFL.
    • VOR approaches uning NAV mode with either autopilort or flight director is authorized only if; - A collocated DME is available, and - DME HOLD is not slected.
    • Minimum height for use of either autopilot or flight director. - Except during take off or executing an approach 1,000 ft. AGL. - APP, V/S or IAS mode during approach; 160 ft AFL
  16. During flight, severe icing conditions that exceed those for which the airplane is certificated shall be determined by the following:

    PrimaryVisual Cues
    Primary Performance Cues
    PRIMARY VISUAL CUES are characterized by ice covering all, or a substantial part of the unheated portion of either forward side window, possibly associated with water splashing and streaming on the windshield.

    AND/OR

    PRIMARY PERFORMANCE CUES are characterized by unexpected decrease in airspeed an/or rate of climb.
  17. Max Fuel Imbalance (lb.)
    1609 lb.
  18. ITT Starting Limitations
    • None - 800
    • 20 seconds - 840
    • 5 seconds - 950
  19. Oil Temp Starting Limitation
    -54 oC
  20. Starting limitatoin (Time)
    Three starts with a 1 minute 30 second maximum combined starter running time, followed by four minutes OFF.
  21. ATR 72 (212) Reserve Takeoff (RTO) 5 minutes (a)

    TQ (%)
    NP (%)
    ITT (oC)
    • TQ (%) - 100
    • NP (%) - 100
    • ITT (oC) - 800

    a. Scheduled RTO torque is 100%; however, acceptable overtorque is 106.3% and 101% Np.
  22. ATR 72 212 Takeoff (TO) 5 minutes (b)

    TQ (%)
    NP (%)
    ITT (oC)
    • TQ (%) - 90
    • NP (%) - 100
    • ITT (oC) - (c)

    • b. Values linked to 100% Np; however, acceptable Np is 101%
    • c. ITT limits are dependent on outside air temerature. Refer to [72] ITT takeoff limits.
  23. ATR 72 212 Maximum Continous (MCT) No Time Limit. (b)
    TQ (%)
    NP (%)
    ITT (oC)
    • TQ (%) - 90.9
    • NP (%) - 100
    • ITT (oC) - 800

    b. Values linked to 100%; however, aceptable overtorque is 106.3% and 101% Np.
  24. ATR 72 212A Reserve Takeoff (RTO) 10 minutes (b)

    TQ (%)
    NP (%)
    ITT (oC)
    • TQ (%) - 100
    • NP (%) - 101
    • ITT (oC) - 800

    (b) Time beyond five minutes is linked to actual single engine operations only.
  25. ATR 72 212A Takeoff (TO) 5 minutes

    TQ (%)
    NP (%)
    ITT (oC)
    • TQ (%) - 90
    • NP (%) - 101
    • ITT (oC) - (c)

    c. ITT limits are dependent on outside air temperature. Tefer to [72] ITT Takeoff limits.
  26. ATR 72 212A Maximum Continuous (MCT) No Time Limit (b)

    TQ (%)
    NP (%)
    ITT (oC)
    • TQ (%) - 90.9
    • NP (%) - 101
    • ITT (oC) - 800

    b. Time beyond five minutes is linked to actual single engine operations only.
  27. Auto Pilot/Flight Director

    * prior to auto pilot engagement
    * Min Height for engagement
    * VOR approaches using NAV mode w/ either auto pilort or flight director
    *Min height for use of either
    * A flight director mode must be selected prior to auto pilot engagement.

    * Minimum height for autopilot engagement after takeoff will be 500 ft. AFL.

    • *VOR approaches using NAV mode with either autopilot or flight director is authorized only if.
    • - A collocated DME is available, and
    • - DME HOLD is not selected
    • * Minimum height for use of either autopilot or flight director.
    • - Except during take off or executing an approach 1000 ft. AGL.
    • - APP, V/S of IAS mode approach: 160 ft. AFL
  28. During flight, severe icing conditions that exceed tose for which the airplane is certificated shall be determined by the following:
    PRIMARY VISUAL CUES are characterized by ice covering all, or a substantial part of the unheated portion of either forward side window, possibly associated with water splashing and streaming on the windshield.

    PRIMARY PERFORMANCE CUES are characterized by unexpected decrease in airspeed and/or rate of climb.

    *** If one of these is observed exit icing conditions and call for Severe Icing Procedure -EMER/ABNORM [ICE]
  29. Visible moisture
    Visible moisture is defined as clouds, fog with visiblity of less than one mile, rain, snow, sleet and ice crystals.
  30. When can level 3 ice protection be deactivated
    Level 3 will not be deactivated until five minutes after leaving Atmospheric Icing Conditions.
  31. Atmospheric Icing On Ground (for takeoff)

    Definition
    OAT 5 oC or colder and Visible Moisture*
  32. Atmospheric Icing On Ground (for takeoff)

    Equipment
    Levels 1 and 2
  33. Atmospheric Icing On Ground (for takeoff)

    Speeds
    Icing
  34. Atmospheric Icing On Ground (for takeoff)

    Limitations
    • [72-212] 86% Np
    • [72-212A] 82% Np
  35. Atmospheric Icing In Flight

    Definition
    TAT 7 oC or colder and visible Moisture*
  36. Atmospheric Icing In Flight

    Equipment
    Levels 1 and 2
  37. Atmospheric Icing In Flight

    Speeds
    Icing
  38. Atmospheric Icing In Flight

    Limitations
    • [72-212] 86%
    • [72-212A] 82%
  39. Atmospheric Icing With Accretion

    Definition
    Ice accretion visible on airframe or indicated by Ice Detector
  40. Atmospheric Icing In Flight

    Equipment
    Levels 1, 2, and 3**

    Level 3 will not be deactivated until 5 min after leaving icing conditions.
  41. Atmospheric Icing In Flight

    Speeds
    Icing
  42. Atmospheric Icing In Flight

    Limitations
    • [72-212] 86% Np
    • [72-212A] 82%Np
  43. Ground Icing (For Takeoff)

    Definition
    OAT 5 oC or colder and surface snow, standing water or slush present on ramps, taxiways or runways.
  44. Ground Icing (For Takeoff)

    Equipment
    CONT RELIGHT and Propeller Anti-icing
  45. Ground Icing (For Takeoff)

    Speeds
    Normal

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