Parmatic Fuel Pressure Switch 555-3817 | Model 1110-A | 5CB/10154 | RCAF 1960

Original RCAF Fuel Pressure Switch, Parmatic model 1110-A, part no. 555-3817, serial S09027, removed from RCAF aircraft 18471 in 1960. Manufactured in Canada by Parmatic Engineering Ltd., this unit monitored fuel-line pressure and provided an SPDT electrical signal at a calibrated 10/7 PSI range.Includes its original RCAF red-border unserviceable tag, dated 4 Nov 1960, noting removal for “leaking fuel at plug.” Tag includes full trace data: Sec/Ref 5CB/10154, work-order references, inspector signature, and aircraft number. Excellent provenance for Cold War RCAF collectors.Manufacturer: Parmatic Engineering, CanadaModel: 1110-APart No.: 555-3817Range: 10/7 PSIRating: SPDT, 2.5A @ 28V DCRemoved: RCAF A/C 18471Condition: Offered as removed with its original RCAF tag. Shows expected handling marks, tag wear, and external surface aging. Not tested and not serviceable for flight use. Ideal for display, historical reference, or RCAF Cold War collections.Rare Canadian-made fuel-system component with genuine 1960 RCAF provenance.

This Parmatic Engineering Ltd. aircraft fuel pressure switch is a Canadian-manufactured aviation system component identified as Model 1110-A, Part No. 555-3817, Serial No. S09027. The manufacturer label indicates Type: Fuel with an actuation setting of approximately 10/7 PSI and an electrical rating of SPDT, 2.5 amps at 28 VDC continuous. The unit also references Customer’s Drawing No. 5CB/10154, consistent with markings recorded on the accompanying maintenance documentation.

The switch retains two original Royal Canadian Air Force repairable tags, both dated 4 Nov 1960, documenting removal from A/C 18471 and identifying the nature of unserviceability as “Leaking fuel at plug.” The tags record Sec/Ref No. 5CB/10154, part number 555-3817, and maintenance trace details including inspector authentication. Handwritten entries including “TFR 0511/3669 1–15 Nov 60” appear on the tag header and likely reference period RCAF maintenance tracking or work-order documentation associated with the removal.

The aluminum housing features integral aircraft mounting ears, a threaded fuel port, and a circular electrical connector interface. The fuel port has remained protected during storage with a green protective cap. The presence of both original RCAF repair tags provides clear Cold War era maintenance provenance for this Canadian military aviation component.