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encounter and course change.
2. Altitude / Airspeed ....................................DESCEND AT VMO/MMO
TO 25,000 FT, THEN SLOW TO 210 KCAS
NOTE: Use of speed brakes is not recommended. Use of the Standby
Electrical Power System (ABEX) generator is not possible with a
windmilling engine.
CAUTION: MANEUVERS SHOULD BE LIMITED TO THE MINIMUM
NECESSARY BANK AND PITCH ANGLES, SINCE HYDRAULIC
BOOST WILL BE LOST AS RPM DECAYS.
WARNING: ENGINE DAMAGE MAY RESULT IF RPM IS NOT
ALLOWED TO STABILIZE AT IDLE BEFORE ADVANCING POWER
LEVERS.
3. Descent To Airstart Envelope...CONTINUE / CLEAR ASH CLOUD
(Sea Level to 25,000 ft and 200 KCAS to 324 KCAS)
4. Dual Engine Flameout Procedure (Page EC-3) ............. CONSULT
END
Heavy Rain / Hail Encounter AFM APP E
The Tay engine is tolerant of water ingestion rates normally
encountered in flight. During flight through heavy rain or hail, it is
possible that there may be fluctuations in engine parameters, in
particular, a noticeable drop in indicated TGT.
The following general procedures are recommended if heavy rain or
hail is encountered:
• Avoid rapid power adjustments, if possible.
• Select Airstart Ignition (L / R AIR START IGN) to ON.
Continued on next page →
Quick Reference Handbook
SUPPLEMENTAL PROCEDURES / DATA REVISION 8
Page S - 6 Oct 11/02
Heavy Rain / Hail Encounter, ctd… AFM APP E
• Select autothrottle to OFF.
• Maintain as high a power setting as possible.
Engine parameters should return to normal immediately on leaving the
area of heavy rain.
If both engines flame out, an immediate relight is recommended.
As engine RPM is decreasing, perform the following steps
IMMEDIATELY:
1. Power Levers ...........................................................................IDLE
2. Airstart Ignition (L / R AIR START IGN)..................................... ON
3. Altitude / Airspeed ....................................DESCEND AT VMO/MMO
TO 25,000 FT, THEN SLOW TO 210 KCAS
NOTE: Use of speed brakes is not recommended. Use of the Standby
Electrical Power System (ABEX) generator is not possible with a
windmilling engine.
CAUTION: MANEUVERS SHOULD BE LIMITED TO THE MINIMUM
NECESSARY BANK AND PITCH ANGLES, SINCE HYDRAULIC
BOOST WILL BE LOST AS RPM DECAYS.
CAUTION: FOR AIRPLANES SN 1000 THROUGH 1249 WITHOUT
ASC 304: THE DUTY CYCLE FOR CONTINUOUS (AIRSTART)
IGNITION WITHOUT ASC 304 IS FIVE (5) MINUTES ON AND THIRTY
(30) MINUTES OFF FOR COOLING. THERE IS NO LIMITATION ON
THE IGNITION WHEN USED IN A THIRTY (30) SECONDS ON, THIRTY
(30) SECONDS OFF CYCLE.
CAUTION: FOR AIRPLANES SN 1250 AND SUBSEQUENT, AND
SN 1000 THROUGH 1249 WITH ASC 304: THERE IS NO DUTY CYCLE
TIME LIMITATION FOR CONTINUOUS (AIRSTART) IGNITION WITH
ASC 304.
CAUTION: ENGINE DAMAGE MAY RESULT IF RPM IS NOT
ALLOWED TO STABILIZE AT IDLE BEFORE ADVANCING POWER
LEVERS.
If engine(s) DO NOT relight:
1. Descent To Airstart Envelope .......................................CONTINUE
(Sea Level to 25,000 ft and 200 KCAS to 324 KCAS)
2. Airplane ..... PROCEED TO NEAREST SUITABLE LANDING SITE
3. Dual Engine Flameout Procedure (Page EC-3)............. CONSULT
END
Quick Reference Handbook
REVISION 8 SUPPLEMENTAL PROCEDURES / DATA
Oct 11/02 Page S - 7
Turbulence Penetration / Severe Gust Encounter
AFM APP E
Turbulence penetration procedures apply to flying at altitude and
should not be confused with the low altitude wind shear precautions
recommended for the traffic pattern and landing approach phase of
the mission.
If possible, flight through turbulence should be avoided. Flying the
recommended speeds at reduced altitudes produces greater buffet
margins for the same intensity of turbulence.
Continued use of the autopilot will reduce pilot workload. However,
use of the Flight Director (FD) vertical modes is not advised in severe
turbulence. The basic pitch attitude and heading hold autopilot modes
will reduce excessive control surface motion and attitude changes in
severe turbulence. Airplane pitch motions and ride qualities are
aggravated when FD vertical modes are engaged during these flight
conditions.
The following general procedures are recommended if SEVERE gust
turbulence is encountered:
• Avoid rapid power adjustments, if possible.
• Select Airstart Ignition (L / R AIR START IGN) to ON.
• Select autothrottle to OFF.
If both engines flame out, an immediate relight is recommended.
As engine RPM is decreasing, perform the following steps
IMMEDIATELY:
1. Power Levers............................................................................IDLE
　
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