HOSMERIT
ATR 72-600 LIMITATIONS QUESTIONS AND
ANSWERS COMPLETE SOLUTIONS
Take Off Power Set ✔✔Max 5 min, TQ 90%, ITT 800, 840 20 sec, NH 101.9%,NL101.4%,
NP101%, Oil Press 55-65, Oil Temp 0-125
Max Continuous Pwr ✔✔90.9TQ, 800 ITT, 103.2%NH, 104.2%NL, 101%NP, 55-65PSI
Oil, Oil Temp 0-125oC
Ground Idle ✔✔NH-66% mini, Oil Press 40mini up to 75%NH
ITT MAX's ✔✔Reserve T/O 800c T/O -30=740, 15+ = 765, Start 5 sec = 950, Other800, up to
840 for 20 sec.
Hotel Mode ITT Max ✔✔715, Oil Press 55-65psi.
X/W Max, Tail Wind Max ✔✔X/W 35 kts reduces with diff condxTail Wind Max 10kts
Vmo ✔✔250
VA, Vra, Vwo ✔✔VA=175, Vra(Turb) = 180, VWo (wipers)= 160Max Tire ✔✔165
Flap Speeds ✔✔VFE 15= 185VFE 30=150
Gear Speeds ✔✔VLe (gear out) = 185VLo Retract = 160
VLo Lower = 170
Fuel Weights & Max imbalance ✔✔Fuel 5000kg (2500 per tank) Max inbalance 730kgMTOW,
MLW, MZFW ✔✔MTaxi = 23,170kg
MTOW=23,000kgMLW=22,350kg MZFW=21,000kg
BUGS Take Off ✔✔Green - V1 or 70ktsYellow - VR
White - Final T/0Red - Icing Bug Speed Bug - V2
Speed on AutoPilot V2+5
, BUGS - Cruise ✔✔White - Normal Drift Down (VmLB) or Icing Drift Down Flaps 15Red - Min
Enroute Flap 0 Icing
Speed Bug - as per Ops Chart
Starting engine max ✔✔for up to 5 sec max 950.ITT Max ✔✔15oC + = 765, -30oC = 740
Props - Ground max TQ with x/w ✔✔X/w of 5-20kts max 58% TQIcing Condx min NP
✔✔82%
Air Pressurization limits ✔✔Max Diff Pressure 6.35PSIMax -Ve -0.5
Max Ldg 0.35PSI
Max diff pressure Ovbd Valve fully open 1.0PSIMax alt 1 bleed off = 20,000
Electric - DC GEN ✔✔400A600A 2 min
800A 8 sec
Electric - INV ✔✔500VA575VA 30min
750VA 5min
Electric - ACW GEN ✔✔20kVA30KVA 5min
40KVA 5 sec
Electric - TRU ✔✔60A90A - 5MIN
Auto Flight Control System AFCS heights ✔✔Min Height T/O 100ftVS or IAS/CAT1 mode
apch:160ft
Other apch: 1000ft
if 1 ADC and/or AHRS lost: min 1000ft & not if Stall warning INOPRequired Flight Crew
✔✔Pilot, co-pilot
Types of Aircraft Operations ✔✔- 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 areoutside
of the certification envelope. In case of inadvertent encounter, refer to the Severe Icing
Emergency Procedure, [ICE].
ATR 72-600 LIMITATIONS QUESTIONS AND
ANSWERS COMPLETE SOLUTIONS
Take Off Power Set ✔✔Max 5 min, TQ 90%, ITT 800, 840 20 sec, NH 101.9%,NL101.4%,
NP101%, Oil Press 55-65, Oil Temp 0-125
Max Continuous Pwr ✔✔90.9TQ, 800 ITT, 103.2%NH, 104.2%NL, 101%NP, 55-65PSI
Oil, Oil Temp 0-125oC
Ground Idle ✔✔NH-66% mini, Oil Press 40mini up to 75%NH
ITT MAX's ✔✔Reserve T/O 800c T/O -30=740, 15+ = 765, Start 5 sec = 950, Other800, up to
840 for 20 sec.
Hotel Mode ITT Max ✔✔715, Oil Press 55-65psi.
X/W Max, Tail Wind Max ✔✔X/W 35 kts reduces with diff condxTail Wind Max 10kts
Vmo ✔✔250
VA, Vra, Vwo ✔✔VA=175, Vra(Turb) = 180, VWo (wipers)= 160Max Tire ✔✔165
Flap Speeds ✔✔VFE 15= 185VFE 30=150
Gear Speeds ✔✔VLe (gear out) = 185VLo Retract = 160
VLo Lower = 170
Fuel Weights & Max imbalance ✔✔Fuel 5000kg (2500 per tank) Max inbalance 730kgMTOW,
MLW, MZFW ✔✔MTaxi = 23,170kg
MTOW=23,000kgMLW=22,350kg MZFW=21,000kg
BUGS Take Off ✔✔Green - V1 or 70ktsYellow - VR
White - Final T/0Red - Icing Bug Speed Bug - V2
Speed on AutoPilot V2+5
, BUGS - Cruise ✔✔White - Normal Drift Down (VmLB) or Icing Drift Down Flaps 15Red - Min
Enroute Flap 0 Icing
Speed Bug - as per Ops Chart
Starting engine max ✔✔for up to 5 sec max 950.ITT Max ✔✔15oC + = 765, -30oC = 740
Props - Ground max TQ with x/w ✔✔X/w of 5-20kts max 58% TQIcing Condx min NP
✔✔82%
Air Pressurization limits ✔✔Max Diff Pressure 6.35PSIMax -Ve -0.5
Max Ldg 0.35PSI
Max diff pressure Ovbd Valve fully open 1.0PSIMax alt 1 bleed off = 20,000
Electric - DC GEN ✔✔400A600A 2 min
800A 8 sec
Electric - INV ✔✔500VA575VA 30min
750VA 5min
Electric - ACW GEN ✔✔20kVA30KVA 5min
40KVA 5 sec
Electric - TRU ✔✔60A90A - 5MIN
Auto Flight Control System AFCS heights ✔✔Min Height T/O 100ftVS or IAS/CAT1 mode
apch:160ft
Other apch: 1000ft
if 1 ADC and/or AHRS lost: min 1000ft & not if Stall warning INOPRequired Flight Crew
✔✔Pilot, co-pilot
Types of Aircraft Operations ✔✔- 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 areoutside
of the certification envelope. In case of inadvertent encounter, refer to the Severe Icing
Emergency Procedure, [ICE].
