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NORMAL PROCEDURES REVISION 7
Page NG - 12 May 30/02
Use Of The Rudder In Flight, ctd… AFM 2-08-110
2. Do not walk the rudder in tune with the yaw response either with
abrupt or smooth inputs
3. If you follow the above two rules and continue to fly the airplane
within the published envelope using normal airmanship, you will
not overstress the airplane.
NOTE: Small rudder doublets for the purposes of flight test of yaw
damper effectiveness and response are allowed.
END
Thrust Reverser Lockout OM 09-03-10
1. General:
If a Thrust Reverser (T/R) system malfunction is suspected or if a
failure prevents normal function of either or both T/Rs (including a
no deploy condition), the airplane cannot be dispatched until the
condition is corrected. Gulfstream recommends contacting
Gulfstream Technical Operations, the Operator’s Area Field
Service Representative or the Operator’s Home Base of
Operations if a T/R system malfunction is suspected or a failure is
detected.
Thrust reverser lockout procedures for the Gulfstream IV airplane,
although available to increase the level of dispatch capability, are
a complex procedure. An improperly locked down T/R may cause
extensive damage to the T/R system, spurious UNLOCK or
DEPLOY warnings to be displayed to the flight crew or, in the
worst case, actual inadvertent deployment of a T/R door. Therefore,
T/R lockout procedures are to be performed only by properly
certificated Airframe and Powerplant Technicians in accordance
with Chapter 78 of the latest approved version of the Gulfstream
Aerospace GIV Aircraft Maintenance Manual.
With one reverser inoperative, the flight crew must be aware of
possible asymmetric braking effects if the operative reverser is
deployed on landing. If desired, lockdown of a properly operating
T/R can be accomplished to avoid possible asymmetric braking
effects. However, Gulfstream does not recommend this in the
event that the operational T/R is needed for any reason during period
the single malfunctioning T/R is locked down.
Continued on next page →
Quick Reference Handbook
REVISION 7 NORMAL PROCEDURES
May 30/02 Page NG -13
Thrust Reverser Lockout, ctd… OM 09-03-10
2. References:
• GIV Master Minimum Equipment List, System 78
• GIV Airplane Flight Manual, Limitations, Section 01-78-10:
Thrust Reversers
• GIV QRH Section EC (Engines): Thrust Reverser Abnormal /
Emergency Procedures
END
Engine Start - Manual Operation Of Start Valve
OM 09-03-40
1. General:
Procedures for manually overriding the start valves on the
Gulfstream IV are included to enable the flight crew to assist and
supervise ramp service personnel when the airplane is away from
its fixed base of operations. The procedures provided in this section
are general in nature and are intended to increase the level of
dispatch capability. Should the procedures presented in this section
conflict with the latest approved version of the Gulfstream
Aerospace GIV Aircraft Maintenance Manual, those procedures
shall take precedence over the procedures presented in this section
in any and all cases.
A. Overview:
This procedure provides an alternate method to start the engine
if the start valve has failed in the closed position and cannot
be started using normal Airplane Flight Manual (AFM) procedures.
Effective electronic voice communications and coordination
between cockpit and ground crews will be necessary for this
procedure.
If the engine fails to start but IGN and SVO and IGN icons are
displayed, the failed closed start valve may be stuck due to
condensation and/or corrosion. The start valve indication
comes on with 6° of valve rotation; therefore, the start valve
open indication (SVO icon) may be displayed but the valve may
be almost fully closed.
Continued on next page →
Quick Reference Handbook
NORMAL PROCEDURES REVISION 7
Page NG - 14 May 30/02
Engine Start - Manual Operation Of Start Valve, ctd… OM 09-03-40
Manually exercising the start valve in accordance with
Paragraph 2.C. may “free up” the start valve, allowing the
engine to be started normally.
If the engine does not start normally after manually exercising
the valve or the IGN and SVO indications are not displayed,
Paragraph 2.D. provides the procedure to start engine with the
valve manually opened.
Normal ground/inflight operation of systems using bleed air is
not affected by this procedure.
CAUTION: IF THE START VALVE HAS FAILED IN THE OPEN
POSITION, REPLACE VALVE PRIOR TO AIRCRAFT DISPATCH.
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