AC 23-8B

Historical

Advisory circular · Flight Test Guide for Certification of Part 23 Airplanes

A newer version is currentThis is a historical version. AC 23-8C is the version in force, approved November 16, 2011.
Approved
August 14, 2003
Last reviewed
September 19, 2003
Cancels
AC23-8A
Cancelled by
AC23-8C
Family
AC 23-8 · 3 versions
Revision
B
14 CFR parts
23
Cited by
1 AD

Guidance, not mandatory unless a rule or AD requires it. DRS record last changed November 21, 2025.

Show pages 160–171
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(6) Automatic Display. Automatic display of appropriate checklists during conditions of engine failure, generator failure, and so forth, will require a review based upon the specific application involved. Approval of the checklist content, malfunction prioritization, and operation is required.

413. SECTION 23.1587 PERFORMANCE INFORMATION.

a. Performance Information. This section contains the airworthiness performance information necessary for operation in compliance with applicable performance requirements of Part 23, applicable special conditions, and data required by Part 36. Additional information and data essential for implementing special operational requirements may be included. Performance information and data should be presented for the range of weight, altitude, temperature, airplane configurations, thrust rating, and any other operational variables stated for the airplane. This information should include a discussion of icing operations, loss of performance possible, and any information to aid in recognition of icing conditions that may exceed the certificated capabilities of the aircraft ice protection systems.

b. Normal, Utility, and Acrobatic Category Airplanes. See GAMA Specification 1.

c. Commuter Category Airplanes.

(1) General. Include all descriptive information necessary to identify the precise configuration and conditions for which the performance data are applicable. Such information should include the complete model designations of airplane and engines, the approved flap, sweep, or canard settings, definition of installed airplane features and equipment that affect performance, together with the operative status thereof (for example, antiskid devices, automatic spoilers, and so forth). This section should also include definitions of terms used in the Performance Section (that is, IAS, CAS, ISA, configuration, net takeoff flight path, icing conditions, and so forth), plus calibration data for airspeed (flight and ground), Mach number, altimeter, ambient air temperature, and other pertinent information.

(2) Performance Procedures. The procedures, techniques, and other conditions associated with attainment of the flight manual performance data should be included. Performance procedures may be presented as a performance subsection or in connection with a particular performance graph. In the latter case, a comprehensive listing of the conditions associated with the particular performance may serve the objective of "procedures" if sufficiently complete.

(3) Thrust or Power Setting. Thrust or power settings should be provided for at least takeoff and maximum continuous and the methods required to obtain the performance shown in the AFM. If appropriate, these data may be required to be shown for more than one thrust setting parameter.

(4) Takeoff Speeds. The operational takeoff speeds V1, VR, and V2 should be presented together with associated conditions. Section 23.1587(d)(10) requires the speeds be given in CAS. Since the flightcrew flies IAS, the airspeeds should also be presented in IAS. The V1 and VR speeds should be based upon "ground effect" calibration data; the V2 speeds should be based upon "free air" calibration data.

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(5) Takeoff Distance. Takeoff distance should be shown in compliance with § 23.59.

(6) Climb Limited Takeoff Weight. The climb limited takeoff weight, that is the most limiting weight showing compliance with § 23.67, should be provided.

(7) Miscellaneous Takeoff Weight Limits. Takeoff weight limits, for any equipment or characteristic of the airplane configuration which imposes an additional takeoff weight restriction, should be shown (that is, tire speed limitations, brake energy limitations, and so forth).

(8) Takeoff Climb Performance. For the prescribed takeoff climb airplane configurations, the climb gradients should be presented together with associated conditions. The scheduled climb speed(s) should be included.

(9) Takeoff Flight Path Data. The takeoff flight paths of § 23.61 or performance information necessary to enable construction of such paths, together with associated conditions (that is, procedures, speed schedules), should be presented for the configurations and flight path segments existing between the end of the prescribed takeoff distance and the point of attaining the en route climb configuration airspeed or 1500 feet, whichever is higher.

(10) En Route Climb Data. The climb gradients prescribed in § 23.67 should be presented together with associated conditions, including the speed schedule used.

(11) Balked Landing Climb Limited Landing Weight. The climb limited landing weight that is the most limiting weight showing compliance with § 23.77.

(12) Approach Climb Limited Landing Weight. The climb gradient determined in § 23.67(e)(3) should be presented. The required climb gradient may limit the landing weight.

(13) Landing Approach Speeds. The scheduled speeds associated with the approved landing distances should be presented together with associated conditions.

(14) Landing Distance. The landing distance from a height of 50 feet should be presented together with associated ambient temperature, altitude, wind conditions, and weights up to the maximum landing weight. Operational landing distance data should be presented for smooth, dry, and hard-surfaced runways. At the option of the applicant, with concurrence by the FAA, additional data may be presented for wet or contaminated runways and for other than smooth, hard-surfaced runways.

414. SECTION 23.1589 LOADING INFORMATION. See GAMA SPECIFICATION 1.

415.-424. RESERVED.

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