47-10-17 LOCKHEED: (Was Mandatory Note 19 of AD-763-3.) Applies to All Model 49 Serials Up to and Including 2075.
Compliance required prior to resumption of cabin supercharger operation.
Prior to resumption of cabin supercharger operation, the following Lockheed Service Bulletins must be complied with:
49/SB-107, revised November 22, 1946 - Replacement of Cabin Supercharger Drive Shafts.
49/SB-141, revised August 7, 1946 - Replacement of Cabin Supercharger.
49/SB-156, revised September 17, 1946 - Installation of Supercharger Oil Temperature Indicator.
The revision dates given for these three Bulletins are later than those listed in the Supplement to AD-763 (Special) dated September 25, 1946. Aircraft on which the cabin supercharging equipment was rendered operative in accordance with that Supplement should be checked for compliance with these later revisions dates within the next 150 hours of operation.