COPY
FEDERAL AVIATION AGENCY
Washington, 25, D.C. 20553
In Reply
Refer to: ES-100
Mr. Leon H. Tanguay
Director, Bureau of Safety
Civil Aeronautics Board
Washington, D. C. 20128
Dear Mr. Tanguay:
This supplements our July 30, 1963, reply to Mr. Boyd's letter dated June 14, 1963, reference B-1-96, concerning brake failures of Curtiss propellers on Lockheed 1049G aircraft.
This is to advise that on November 25, 1963, Airworthiness Directive No. 63-24-1 was issued requiring replacement of brake cages within 100 hours' time in service after the effective date of the airworthiness directive. A copy of FAA Airworthiness Directive Issue No. 63-24 is enclosed for your information. Mr. Frank Taylor of your Engineering Division was notified by telephone of this airworthiness directive immediately following its issuance.
As indicated in our July 30, 1963, letter, we believe that closer surveillance of the threaded type brake cage units and replacement of the threaded units with bolted configurations will preclude the possibility of further Curtiss propeller brake failures.
Sincerely yours,
/s/C Schuck
George S. Moore
Director
Flight Standards Service
Enclosure
(page 6 of 6)
