Atr72 Limitations Flashcards
Maximum operating altitude?
25,000’
Manoeuvring load limit factors gear and flap retracted and extended?
Gear and flaps retracted +2.5 G to -1G
Gear and/or flaps extended +2G to 0G
Maximum taxi weight?
47,465 lbs
Maximum takeoff weight?
47,400 lbs
Maximum landing weight?
47,068 lbs
Max Zero fuel weight?
43,430 lbs
VMO
250 kts
Va
175 kts
Vfe flap 15
185 kts
Vfe flaps 30
150 kts
Vle
185 kts
Vlo Ret
160 kts
Vlo ext
170 kts
Vra
180 kts
Vmcl flaps 15
97 kts
Vmcl flaps 30
93 kts
Max tire speed
165 kts
Flaps 0 recommended speed
180 kts
Flaps 15 recommended speed
150 kts
Flaps 30 recommended speed
135 kts
Maximum OAT?
50°c at sea level
0°c at FL250
Or ISA +35°c
Minimum OAT?
- 54°C in flight
- 45°C for take off and landing
Takeoff and landing tail wind limit?
10 kts
Maximum demonstrated crosswind?
35 kts
Maximum mean runway slope?
+/-2%
Cat II operation wind limits?
Headwind 30 kts
Crosswind 15kts
Tailwind 10kts
Minimum height for use of auto pilot in approach mode CAT II?
50 ft
Minimum decision height for auto pilot flight director CAT II?
100 ft
Maximum demonstrated wind auto pilot flight director CAT II?
Headwind 30 kts
Crosswind 15kts
Tailwind 10 kts
Maximum differential pressure?
6.35 psi
Maximum negative differential pressure?
-0.5 psi
Maximum differential pressure for landing?
0.35 psi
Max differential pressure for OVBD VALVE full open selection?
1 psi
Maximum altitude for one bleed off operation?
20,000’
Minimum height for auto pilot engagement after takeoff?
100’
Minimum height for use of auto pilot or flight director enroute?
1000’
Minimum height for use of auto pilot or flight director during approach?
160’
Can you hold with flaps extended in icing conditions?
No except for single engine
Cargo door lateral wind component limit?
45 kts
Engine itt starting limits?
950°C for 5 seconds
840°C for 20 seconds
800°C continuous
Engine operation ITT limits?
840°C for 20 seconds
800°C continuous
Engine over torque limits?
- 5% for 20 seconds
- 3% for 10 min. REQUIRED over TQ
- 5% continuous only inflight emerg
102.3% torque limit conditions?
10 minutes and must recorded in log book. No time limit when NP is below 86%.
Maximum ITT normal takeoff rating at 0° OAT?
765°C
Maximum ITT for normal takeoff rating at 54° OAT?
780°c
Minimum oil temperature for starting?
-54°C
Minimum engine oil temperature for flight?
0°C
45°C for intake strut deicing
71°C for full anti ice and no low fuel temperature indications
Maximum engine oil temperature?
115°C
125°C for 20 minutes
Hotel mode maximum ITT and oil temperature?
715°C itt
120°C oil
Minimum ground idle NH?
66%
Minimum oil pressure ground idle?
40 psi
Transient limits for 20 seconds?
TQ 124.5% 840°C itt Nh 103.7% NL 104.3% NP 110% Oil pressure 40 to 100 psi
Normal oil pressure range?
55 to 65 psi
Starter limitations?
3 starts with 90 seconds total cranking time followed by 4 minute break.
Maximum fuel temperature?
+57°C
useable fuel per tank?
5,510 lbs
Maximum fuel imbalance?
1,609 lbs
Maximum refuelling pressure?
50 psi
Maximum approach slope?
Less than 4.5°
Atr72 length?
90’
Atr72 wingspan?
89’
Atr72 tail Heights?
26’
Atr72 wheel base?
13.5’
Maximum aft percent Mac For takeoff and landing and flight?
37%
39%
Minimum forward percent Mac For Flight and takeoff and landing?
Flight 10%
T/O landing 14%
Both further limited above 39,683 lbs
Mmo
.55
Stall speed at maximum weight clean?
119 kts
Stall speed maximum weight flaps 15 gear up?
102 kts
Stall speed maximum weight flaps 30 gear down?
94 kts
Single DC GEN operation limitations?
If OAT exceeds ISA + 25 then FL200
Propeller ground operation limits?
Avoid static ops 41-65% NP
Avoid TQ above 47% in feather
Run ups into the wind
Do not exceed 91.7% TQ below 30 kts except for transients during t/o or service checks 2 minutes or less
Do not exceed 91.6% NP below 30 KTS except for transients during T/O or service checks 2 minutes or less
Operational flight plan allowable TOGW increase?
3000 lbs
Atr72 minimum temperature for takeoff and landing?
-45°C
Atr72 cargo zone weights?
Zone 1: 400lbs
Zone 2-9: 2600lbs
Zone 10: 800lbs
Atr72 minimum runway width?
98ft
True or false. You can use V/S to climb?
False.
STRICTLY
PROHIBITED
NP required for icing?
> 86%
Can you land at an airport with active light freezing drizzle or light freezing rain?
Prohibited at any intensity
What wind factor is used for approach?
1/3 headwind component or
All the gust up to 15kts
When should EEC be turned off when feathered?
Torque >30%
Fuel introduction at start?
Passing 10%NH
+1%NH for 10°C of residual ITT between 100°-200°
DC GEN max loads and limits?
400A continuous
600A 2 minutes
800A 8 seconds
Inverter max loads and limits?
500 VA continuous
575 VA 30 minutes
750 VA 5 seconds
ACW GEN max loads and limits?
20 KVA continuous
30 KVA 5 minutes
40 KVA 5 seconds
Maximum speed for wiper use?
160 kts