Steven P. McNicoll wrote:
"Sam Spade" wrote in message
news:Yq5Xg.32373$tO5.1670@fed1read10...

Oh there isn't? What about 121.590 (d) (2) (i) and (ii)? Bevis' carrier
elected to tie the reference of their ops specs authorization to
substitute CLs for RLs to 121.97, which is fine from a regulatory
standpoint, because 121.97 is subject to 121.590.

I cite the pertinent requirements from 121.50. Note in particular (d)
(2).

§ 121.590 Use of certificated land airports in the United States.
(a) Except as provided in paragraphs (b) or (c) of this section, or unless
authorized by the Administrator under 49 U.S.C. 44706(c), no air carrier
and no pilot being used by an air carrier may operate, in the conduct of a
domestic type operation, flag type operation, or supplemental type
operation, an airplane at a land airport in any State of the United
States, the District of Columbia, or any territory or possession of the
United States unless that airport is certificated under part 139 of this
chapter. Further, after June 9, 2005 for Class I airports and after
December 9, 2005 for Class II, III, and IV airports, when an air carrier
and a pilot being used by the air carrier are required to operate at an
airport certificated under part 139 of this chapter, the air carrier and
the pilot may only operate at that airport if the airport is classified
under part 139 to serve the type airplane to be operated and the type of
operation to be conducted.

(d)....

(2) For an airplane carrying passengers at night, the pilot may not take
off from, or land at, an airport unless--
(i) The pilot has determined the wind direction from an illuminated wind
direction indicator or local ground communications or, in the case of
takeoff, that pilot's personal observations; and
(ii) The limits of the area to be used for landing or takeoff are clearly
shown by boundary or runway marker lights. If the area to be used for
takeoff or landing is marked by flare pots or lanterns, their use must be
authorized by the Administrator.



Why did you delete subparagraph (d)?

(d) An air carrier, a commercial operator, and a pilot being used by the air
carrier or the commercial operator-when conducting a passenger-carrying
airplane operation under this part that is not a domestic type operation, a
flag type operation, or a supplemental type operation-may operate at a land
airport not certificated under part 139 of this chapter only when the
following conditions are met:


Too quick I guess. The missing part imposes the foregoing requirement
on non-Part 139 land airports, which would be an unusual authorization.

But, probably every airport Comair operates into is certified under Part
139; certainly LEX is. Whether this is a distinction with any
difference is doubtful, since Part 139 requirements that have
operational implications become a part of a 121 certificate holder's
operations specifications (which are considered regulatory):

The pertinent part of 139 reads:

§ 139.311 Marking, signs, and lighting.
(a) Marking. Each certificate holder must provide and maintain marking
systems for air carrier operations on the airport that are authorized by
the Administrator and consist of at least the following:
(1) Runway markings meeting the specifications for takeoff and landing
minimums for each runway.
(2) A taxiway centerline.
(3) Taxiway edge markings, as appropriate.
(4) Holding position markings.
(5) Instrument landing system (ILS) critical area markings.
(b) Signs.
(1) Each certificate holder shall provide and maintain sign systems for
air carrier operations on the airport that are authorized by the
Administrator and consist of at least the following:
(i) Signs identifying taxiing routes on the movement area.
(ii) Holding position signs.
(iii) Instrument landing system (ILS) critical area signs.
(2) Unless otherwise authorized by the Administrator, the signs required
by paragraph (b)(1) of this section must be internally illuminated at
each Class I, II, and IV airport.
(3) Unless otherwise authorized by the Administrator, the signs required
by paragraphs (b)(1)(ii) and (b)(1)(iii) of this section must be
internally illuminated at each Class III airport.
(c) Lighting. Each certificate holder must provide and maintain lighting
systems for air carrier operations when the airport is open at night,
during conditions below visual flight rules (VFR) minimums, or in
Alaska, during periods in which a prominent unlighted object cannot be
seen from a distance of 3 statute miles or the sun is more than six
degrees below the horizon. These lighting systems must be authorized by
the Administrator and consist of at least the following:
(1) Runway lighting that meets the specifications for takeoff and
landing minimums, as authorized by the Administrator, for each runway.
(2) One of the following taxiway lighting systems:
(i) Centerline lights.
(ii) Centerline reflectors.
(iii) Edge lights.