AC 20-191 Appendix D Page 5 of Example Provision - AFM “Normal Procedures” or “Normal Operation” Section [Typical Aircraft Type with Fail Passive FGS Capability] Section 3 - NORMAL OPERATIONS AUTOPILOT - FLIGHT DIRECTOR SYSTEM (AFDS) (Continued)
FLIGHT DIRECTOR (F/D) The flight director command may be used as supplemental guidance to the primary speed and attitude indications for takeoff, climb, and descent to acquire and maintain desired altitudes.
All of the autopilot command modes, except "CWS," are also available on the flight directors. An additional takeoff mode exists for the F/D only. One or both F/Ds may be on for all modes, except during T/O or GA that requires dual F/D ON.
FLIGHT DIRECTOR APPROACH (Applicable to Category II) The flight director system has been shown to meet the applicable airworthiness, performance, and reliability criteria of FAA AC 20-191 for manual approach with the following equipment operative:
• Both flight directors must be selected
• Low Range Radio Altimeter and display for each Pilot
• DH Display for each Pilot
• Two Digital Air Data Computer Systems
• Windshield Wipers for each Pilot
• ILS Receiver and display for each Pilot
• Flight Mode Annunciator for each Pilot
• Two ADIRUs in NAV mode.
• Two sources of electrical power. (The APU generator may be used as an independent power source.)
• Both Engines Operating
GO - AROUND When go-around is initiated, the autothrottle/autothrust system (if engaged) advances the thrust levers automatically. Flaps and landing gear must be controlled manually.
An Autothrottle/autothrust, Flight Director and/or Dual Autopilot go-around may be initiated below a radio altitude of 2000 feet by pressing the go-around switches.
When a decision is made to abort an approach, actuate the go-around switches and assure rotation to go-around attitude. Verify thrust lever movement to achieve a nominal rate of climb and retract flaps to flaps 15.
After a positive rate of climb has been established, retract landing gear. Climb to a safe altitude, accelerate and retract remaining flaps according to takeoff flap retraction speed schedule. Monitor rate of climb, attitude, and airspeed.
Full go-around thrust may be obtained, after engine spool up, by reactivating the go-around switch(es). In windshear, the recommended procedure is to delay flap and gear retraction until windshear is no longer a factor.
FAA APPROVED (Date) Section 3 Page D-8
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