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Mr George S. Moore (2)
the emergency lighting. The reverting to the self-contained nickel batteries in event of complete loss of aircraft electrical power should be retained.
It is further recommended that a study of all other type aircraft be made to ascertain the operating features of their emergency and exit circuitry to assure the emergency lighting operating during any emergency.
The above was discussed with your Airframe Section electrical engineer, Mr. E. Heil.
Sincerely yours,
/s/ B. R. Allen
B. R. Allen
Director, Bureau of Safety
