425
Subpart G : Operating Limitations and Information
FAR23.1583:Operatinglimitations. . . . . . . . . . . . . . . 435 FAR23.1585:Operatingprocedures.. . . . . . . . . . . . . . 438 FAR 23.1587 : Performance information. . . . . . . . . . . . . 439 FAR23.1589:Loadinginformation. . . . . . . . . . . . . . . 441
FAR 23.1501 : General.
(a)
[Each operating limitation speci.ed in Secs. 23.1505 through 23.1527 and other li-mitations and information necessary for safe operation must be established.

(b)
The operatinglimitations andotherinformation necessaryfor safe operation mustbe made availableto the crewmembers asprescribedinSecs.23.1541through23.1589.]

Amdt. 23-21, E.. 03/01/78
FAR 23.1505 : Airspeed limitations.
(a)
The never-exceed speed VNE must be established so that it is–

(1)
Not less than 0.9 times the minimum value of VD allowed under Sec. 23.335; and

(2)
Not more than the lesser of–

(i)
0.9 VD established under Sec. 23.335; or

(ii)
0.9 times the maximum speed shown under Sec. 23.251.

(b)
The maximum structural cruising speed VNO must be established so that it is–

(1)
Not less than the minimum value of VC allowed under Sec. 23.335; and

(2)
Not more than the lesser of–

(i)
VC established under Sec. 23.335; or

(ii)
0.89 VNE established underparagraph(a) of this section.

(c)
[Paragraphs(a)and(b) of this sectiondo not apply toturbine airplanes orthe air-planesfor whichadesigndiving speed VD/MD is establishedunderSec.23.335(b)(4). For those airplanes, a maximum operating limit speed (VMO/MMO airspeed or Mach number, whichever is critical at a particular altitude) must be established asaspeedthatmay notbedeliberately exceededinany regimeof .ight(climb, cruise,ordescent) unlessahigherspeedisauthorizedfor .ighttest orpilottraining operations. VMO/MMO mustbe established so thatitis notgreater than thedesign cruising speed VC/MC and so that it is su.ciently below VD/MD and the maxi-mum speed shown under Sec. 23.251 to make it highly improbable that the latter speeds will be inadvertently exceeded in operations. The speed margin between VMO/MMO and VD/MD or the maximum speed shown under Sec. 23.251 may not be less than the speed margin established between VC/MC and VD/MD under Sec. 23.335(b), or the speed margin found necessary in the .ight tests conducted under Sec. 23.253.]

Amdt. 23-7, E.. 09/14/69
FAR23.1507 :[Operating] maneuvering speed.
[The maximum operatingmaneuvering speed, VO, mustbe established as an operating
√
limitation. VO is a selected speed that is not greater than VS nz established in Sec.
23.335(c).]
Amdt. 23-45, E.. 09/07/93

′
Elodie Roux. Septembre 2003
Subpart G : Operating Limitations and Information
FAR 23.1511 : Flap extended speed.
(a)
The .ap extended speed VFE must be established so that it is–

(1)
[Not less than the minimum value ofVF allowed in Sec. 23.345(b); and

(2)
Not more than VF established underSec.23.345(a),(c), and(d).]

(b)
Additional combinationsof .ap setting,airspeed,and enginepowermay beestabli-

shed if the structure has been proven for the corresponding design conditions. Amdt. 23-50, E.. 03/11/96
FAR 23.1513 : Minimum control speed.
The minimum control speed VMC, determined underSec.23.149, must be established as an operating limitation.
FAR 23.1519 : Weight and center of gravity.
The weight and center of gravity limitations determined under Sec. 23.23 must be established as operating limitations.
　
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