[Code of Federal Regulations]
[Title 14, Volume 2]
[Revised as of January 1, 2003]
From the U.S. Government Printing Office via GPO Access
[CITE: 14CFR121.198]

[Page 369-370]
 
                     TITLE 14--AERONAUTICSAND SPACE
 
CHAPTER I--FEDERAL AVIATION ADMINISTRATION, DEPARTMENT OF TRANSPORTATION 
                               (CONTINUED)
 
PART 121--OPERATING REQUIREMENTS: DOMESTIC, FLAG, AND SUPPLEMENTAL
 OPERATIONS--Table of Contents
 
          Subpart I--Airplane Performance Operating Limitations
 
Sec. 121.198  Cargo service airplanes: Increased zero fuel and landing weights.

    (a) Notwithstanding the applicable structural provisions of the 
airworthiness regulations but subject to paragraphs (b) through (g) of 
this section, a certificate holder may operate (for cargo service only) 
any of the following airplanes (certificated under part 4b of the Civil 
Air Regulations effective before March 13, 1956) at increased zero fuel 
and landing weights--
    (1) DC-6A, DC-6B, DC-7B, and DC-7C; and
    (2) L1049B, C, D, E, F, G, and H, and the L1649A when modified in 
accordance with supplemental type certificate SA 4-1402.
    (b) The zero fuel weight (maximum weight of the airplane with no 
disposable fuel and oil) and the structural landing weight may be 
increased beyond the maximum approved in full

[[Page 370]]

compliance with applicable regulations only if the Administrator finds 
that--
    (1) The increase is not likely to reduce seriously the structural 
strength;
    (2) The probability of sudden fatigue failure is not noticeably 
increased;
    (3) The flutter, deformation, and vibration characteristics do not 
fall below those required by applicable regulations; and
    (4) All other applicable weight limitations will be met.
    (c) No zero fuel weight may be increased by more than five percent, 
and the increase in the structural landing weight may not exceed the 
amount, in pounds, of the increase in zero fuel weight.
    (d) Each airplane must be inspected in accordance with the approved 
special inspection procedures, for operations at increased weights, 
established and issued by the manufacturer of the type of airplane.
    (e) Each airplane operated under this section must be operated in 
accordance with the passenger-carrying performance operating limitations 
prescribed in this part.
    (f) The Airplane Flight Manual for each airplane operated under this 
section must be appropriately revised to include the operating 
limitations and information needed for operation at the increased 
weights.
    (g) Except as provided for the carrying of persons under 
Sec. 121.583 each airplane operated at an increased weight under this 
section must, before it is used in passenger service, be inspected under 
the special inspection procedures for return to passenger service 
established and issued by the manufacturer and approved by the 
Administrator.