48-27-01 LOCKHEED: Applies to All Model 49 Aircraft Modified to Permit Operation at 93,000 Pounds Takeoff and 83,000 Pounds Landing Weights, and Model 49 Aircraft, Redesignated as Model 149, and Modified to Permit 100,000 Pounds Takeoff and 83,000 Pounds Landing Weights.
Compliance required not later than next wing change or aircraft overhaul, and in no event later than February 1, 1949.
In order to comply with the requirements of Civil Air Regulations, fuel dump stand pipes must be installed.
(LAC Service Bulletin 49/SB-403 and LAC Service Instruction 49/SI-12 dated September 25, 1946, cover this same subject.)
Pending the accomplishment of the above change, operations are permissible at the increased weights.