Dash 7 Limits Flashcards
Torque (Ft. Lbs.)
Normal................0 - 4860 Max....................4860 Transient............5900 / 20 sec. Take off..............4860 / 5 min. Reverse..............4860 / 1½ min. Max cont.............4223 Max clmb/crus....4417 75-79 Oil press...2500 max ↓ 900 Np...........3500
Np (Prop RPM)
Caution.............660-870 Normal..............870-1210 Max...................1210 Transient...........1445 Takeoff..............1210 / 5 min. Reverse.............1210 / 1½ min Max cont............1210 Max clmb/crus...1070 * Speeds ↑ 1210 indicate failure of the constant speed governor * Speeds ↑ 1283 indicate failure of both constant speed and over speed gov.
Ng ( % )
Normal (Start)....12-20% Min idle...............68% Normal (Flt)........68-101.6% Max...................102.7% Take off.............102.7% / 5 min. Transient...........103.6% / 15 sec. Max cont............101.6% Max. clmb/crus..101.6% Max reverse.......101.6% / 1½ min
T5 ( ° C )
Normal 490-800° Idle 750° Max 800° Starting 1000° / 5 sec Transient 850° / 2 sec Take off 800° / 5 min Reverse 800° / 1½ min Max cont. 800° Max clmb/crs 770°
Engine Oil Press ( PSI )
Min 75 Caution 75-80 Idle 80 Normal 80-100 Max 100 Transient 80
Pack Temperature
Normal 2-70°
Caution 70-90°
Max 90°
Engine Oil Temp ( ° C )
Min - 40° Caution - 40 - 10° Normal 10 - 99° Max 99° Caution 99 - 104° Starting (min) - 40° Transient 104° / 15 min Take off 10 - 99° Max cont 10 - 99° Max clmb/crus 10 - 99° *Temps ↑ 99° C are abnormal. Limit operations to < 15 minutes.
Battery Temperature
Normal 0 - 50°
Caution 50 - 65°
Over temp 65 - 80°
Differential Press ( PSI )
Normal 0 - 4.26
Caution 4.26 - 4.7
Max 4.7
Max (landing) 0.5
Starter Limitations
1 minute ON - 1 minute OFF 1 minute ON - 1 minute OFF 1 minute ON - 1 minute OFF 1 minute ON - 1 minute OFF 1 minute ON - 15 minutes OFF
Intake Deflector motor limits
1 minute ON - 3 minutes OFF
1 minute ON - 3 minutes OFF
1 minute ON - 10 minutes OFF
Flaps Limitations
- Must be set @ 15° for take off
- Must be set @ 0° - holding in icing
Prohibited settings:
- Beyond 0° for enroute operations
- 15° for landing with anti-skid inop
Nacelle Temperature Limit
Normal 95 - 210°
Caution 210 - 225°
Max 225°
Maneuvering Limits
Flaps retracted 2.53 G - 1.00 G
Flaps extended 2.00 G - 0.00 G
Emergency/Parking Brake Press
Min 1500 psi
Max 3800 psi
Max Runway Slope (t/o or landing)
2% uphill or downhill slope
Vb (gust penetration)
171 KTS (<47000 lbs decr. 1 kt / 1000 lbs.)
Weight Limits
49000 Max ramp wt 47100 Max towing 47000 Max t/o -flaps 15° 45000 Max land - flaps 25° 42000 Max land - flaps 45° 39000 Max zero fuel 36000 Max 3 engine ferry 500 Max fuel imbalance
Altitude Limits
25000’ Max operating
20000’ Max for air starting
18000’ Max for lowering gear or flaps
1000’ AGL Minimum Altitude for Flight with Sensors Extended
*Note about Flaps 15 at 25,000 during special missions
Vmo
231 SL to 7500’
7500 - 25000 decr. 4 kts / 1000’
Max tailwind for landing
10 KTS
Max tailwind for takeoff
10 KTS (Bn Stands SOP)
15 KTS (-10)
Max crosswing (1 eng inop or outbd roll spoilers inop)
18 KTS
Max crosswind (all engines)
20 KTS, unless approved by BC (Bn Stands SOP)
22 KTS (-10)
Vtaxi (Max taxi speed)
VCL (Max control lock speed)
40 KTS
Va (maneuvering)
VLE (landing gear extended)
EO 161 KTS
TO 152 KTS
VFE 25° (Flaps extended)
EO 124 KTS
TO 120 KTS
VWSW (Max wiper speed)
130
Vtire (Max tire speed)
139
VLO (Landing gear operation)
VFE 15° (Flaps extended)
147
VFE 45° (Flaps extended)
110
Min A/S for exiting sev. icing
150
Vdv (DV window open)
Vis (Imagery sensors extd)
160
Max towing
47,100
Max ramp wt
EO 49,000
TO 44,100
Max fuel imbalance
500 / trainer 600
Max 3 engine ferry wt
36,000
Max zero fuel wt
39,000
Max land wt - flaps 45°
42,000
Max land - flaps 25°
EO 45,000
TO 42,000
Max t/o wt - flaps 15°
EO 47,000
TO 44,000
