Title 14 - Aeronautics and Space
Volume: 1Date: 2024-01-01Original Date: 2024-01-01Title: Section 25.1505 - Maximum operating limit speed.Context:
Title 14 - Aeronautics and Space. CHAPTER I - FEDERAL AVIATION ADMINISTRATION, DEPARTMENT OF TRANSPORTATION. SUBCHAPTER C - AIRCRAFT. PART 25 - AIRWORTHINESS STANDARDS: TRANSPORT CATEGORY AIRPLANES. Subpart G - Operating Limitations and Information. - Operating Limitations.
§ 25.1505
Maximum operating limit speed.
The maximum operating limit speed (
V
MO
/
M
MO
airspeed or Mach Number, whichever is critical at a particular altitude) is a speed that may not be deliberately exceeded in any regime of flight (climb, cruise, or descent), unless a higher speed is authorized for flight test or pilot training operations.
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MO
/
M
MO
must be established so that it is not greater than the design cruising speed
V
C
and so that it is sufficiently below
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D
/
M
D
or
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DF
/
M
DF,
to make it highly improbable that the latter speeds will be inadvertently exceeded in operations. The speed margin between
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MO
/
M
MO
and
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D
/
M
D
or
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DF
M/
DF
may not be less than that determined under § 25.335(b) or found necessary during the flight tests conducted under § 25.253.
[Amdt. 25-23, 35 FR 5680, Apr. 8, 1970]