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NOTE
1.
Comprehensive procedures for operating in cold weather are provided in Flight Crew Operating Manual, Volume 1, Chapter 7; SUPPLEMENTARY PROCEDURES . Cold Weather Operations.
2.
Take-off is permitted with frost adhering to the underside of the wing that is caused by cold soaked fuel, in accordance with the instructions provided in Flight Crew Operating Manual, Volume 1, Chapter 7; SUPPLEMENTARY PROCEDURES . Cold Weather Operations . Pre-flight Preparation, External Safety Inspection.
1. OPERATING LIMITATIONS (CONT'D)
H. Runway Surface Condition
Operations from unprepared (i.e. gravel, grass, etc.) runways are prohibited.
I. Minimum Enroute Climb Gradient and Clearance
It is recommended that the minimum enroute net climb gradient with one engine inoperative is positive and all terrain and/or obstacles be cleared by at least 1,300 feet along the enroute flight path.
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LIMITATIONS POWER PLANT
1. ENGINE OPERATING LIMITS
A. Type
BR700.710A2.20, quantity two.
B. Engine Operating Limits Table
CONDITION CORE RPM N2 % FAN RPM N1 % ITT°C
700 (on ground)
Start
850 (in flight) Idle 58.0 (minimum) N/A 860 Take-Off * 900 * Max Continuous 98.9 102.0 860 . 905 (20 seconds) Reverse Thrust . 70.0 (30 seconds) .
* Take-off thrust for 5 minutes with all engines operating. Take-off thrust for 10 minutes in the event of an engine failure.
NOTE
Static ground operation in the range of 66% to 80% N1 is prohibited. Acceleration/deceleration thru this range is permitted. This limitation does not apply to reverse thrust.
C. Cold Weather Operations
Airplane operations in cold weather conditions must be conducted in accordance with Chapter 7; SUPPLEMENTARY PROCEDURES . Cold Weather Operations.
D. Thrust Management Data
Thrust management information is advisory only. Thrust setting data presented on EICAS / FMS must be checked for accuracy prior to use. Refer to Airplane Flight Manual, Chapter 6; PERFORMANCE . THRUST SETTINGS.
E. Maximum Wind Speed and Direction
Engine starts are not permitted when the tailwind component exceeds 20 knots. Anytime there is an external or EICAS indication of N1 rotation due to tailwinds, the engine must be cranked for 30 seconds and must be followed immediately by an AUTO start.
When winds exceed 20 knots, do not exceed the minimum thrust required for taxi. When the take-off crosswind component exceeds 20 knots, do not exceed 66% N1 below 30 KIAS. There are no limits for a headwind within 10 degrees of the airplane centreline.
Refer to Chapter 4; NORMAL PROCEDURES . TAXIING AND TAKE-OFF . HIGH CROSSWIND TAKE-OFF.
2. STARTER CRANKING LIMITS (GROUND AND AIR)
A. General
The starter must not be used if indicated RPM exceeds 42% N2.
B. Engine Start
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