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RC Allen 11A Series Vacuum Directional Gyros

From $925.00 to $1035.00
Model No. Description Part No. Price Buy
RCA11A-8Standard Display
RCA11A-8FStandard Display
with Flag
RCA11A-15Cardinal Heading
markers N., S., E., & W.
(Piper/Cessna display)
RCA11A-15FCardinal Heading
markers N., S., E., & W.
(Piper/Cessna display) with Flag
RCA11A-16BStandard Display
Lighted, 14 Volt
RCA11A-17BStandard Display
Lighted, 28 Volt
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The RCA-11A series of vacuum directional gyros utilize and air driven precision gyro that controls a vertical rotating azimuth gimbal. The R.C. Allen Model RCA11A has been designed to provide a long life of accurate operation even when subjected to severe operating requirements. This instrument is engineered with a minimum of machined parts, providing lower initial cost and lower maintenance cost through its lifetime.

The RCA11A is non-tumbling within 85 limits in pitch and roll and can be easily installed in any 3 1/8" panel cut out. Full freedom design allows accurate indication, even after extreme maneuvers. Stainless steel is used at wear points, with aluminum investment and die castings.

A knob is provided to reset the gyro, when compared to the magnetic compass. the RCA11A-8 features the "standard" display.

Meets or exceeds all requirements of FAA TSO C5c and Aeronautical Standard AS397.
Made in the USA


  • Length: 6.7"
  • Height: 3.4"
  • Width: 3.4"
  • Weight: 2.3 Pounds
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As advertised. Prompt delivery.

Spencer B
April 23, 2021

exactly the right instrument

March 26, 2021


Please note, Aircraft Spruce's personnel are not certified aircraft mechanics and can only provide general support and ideas, which should not be relied upon or implemented in lieu of consulting an A&P or other qualified technician. Aircraft Spruce assumes no responsibility or liability for any issue or problem which may arise from any repair, modification or other work done from this knowledge base. Any product eligibility information provided here is based on general application guides and we recommend always referring to your specific aircraft parts manual, the parts manufacturer or consulting with a qualified mechanic.

Q: Is the RCA11A-8 designed to mount in a vertical panel?

Heading indicators can be mounted in a vertical panel. You have to be aware of the tilt angles when it comes to attitude indicators.

Q: Do the RC Allen Directional Gyros (RCA11A-8 or RCA11A-15) have a bug to set the desire course to follow?

No, please see the RCA11D series part number 10-02931 for heading bug.

Q: Is the RCA11A-8 series instrument FAA TSO certified?

Yes, the RC Allen 11A series is FAA Approved.

Q: Are these new or Factory overhauled?

The gyros listed on this page are factory new.

Q: What kind of threaded fitting and tube/hose fits to this equipment and to the 4 venturi?

A 1/4 -18 NPTF nylon tube slip fitting is recommended for vacuum hose installation. A 1/8 - 27 NPTF nylon tube slip fitting is recommended for vacuum gage installation

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