Service Information: Aircraft Radio & Control (ARC) There will be over 135,000 documents in our Service Information Indexes.
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Field Service Bulletins Name Revision Lang Subject Date
FESB 148 en
Squelch Failure in RT-131A (Mod 3) 2/23/1971
FESB 150 en
Replacement Oscillator Cavity for RT-106A and RT-506A 4/29/1971
FESB 151 en
RT-131 Intermittent RF Output 5/6/1971
FESB 152 en
Addition of Ventilated Covers on RT-131 & Synthesizer ARC# 38462 6/4/1971
FESB 157 en
400A Autopilot Actuator Follow-Up Pot 8/21/1972
FESB 171 en
Inspection of Internal Screw, to Avoid Any Possible Binding of Autopilot Servo Actuator, Types PA-500A/520A/520B 2/22/1974
FESB 181 en
Ensure Adequate Inspection of or to Permit Override of Autopilot Servo Actuator, Type PA-500A 12/1/1975
FESB 206 en
Authorization to Use Relay ARC P/N 38381-1006 in Mod 1 PA-495A-2 Actuators 3/23/1978
FESB 206 A
en
Authorization to Use Relay ARC P/N 38381-1006 in Mod 1 PA-495A-2 Actuators 7/24/1978
Service Advisory Bulletins Name Revision Lang Subject Date
SAB 18 en
Improved Contact for the R-542 - RT-522/532 2/10/1970
SAB 22 B
en
Prevent the Remote Possibility of Moisture Collecting in PA-500 Actuator
SAB 26 en
To Prevent Possible Jamming of the Follow Up Potentiometer Drive Gear by Large Objects in the PA-500 Actuator 4/8/1971
SAB 27 en
To Prevent Accidental Engagement of the AF-530 Autopilot 5/5/1971
Service Letters Name Revision Lang Subject Date
SL 12 en
Sigma Tek Control Panel - 760 Channel Comm Modification 11/13/1989
Miscellaneous Name Revision Lang Subject Date
TA 10 en
Tech Aids: Error in Service/Parts Manual D4550-13, 200A/300A Series Autopilot Test Set (Type 42A) 10/10/1975
