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Part# 05-14072
MFR Model# A-740-BL-0720


(Solid Wire End) Ratchet design provides detented positions under vibration conditions. Simple push-pull operation. Has .050" dia. stainless steel wire Core in flexible metal casing with polyethylene liner. Max temp rating 200-250 degrees. May be shortened as required. Max. travel 3-1/2". Available with black or red plastic knob.

Made in USA
California Prop 65 Warning Symbol

WARNING: Cancer and Reproductive Harm -


Kriegler L Verified Purchase


March 21, 2022

Very good

Boyd W Verified Purchase


February 8, 2022

Deco E Verified Purchase


September 28, 2021

Received on time amd performs as I thought it would and should.

Len S
March 6, 2021

Where is the throttle control I ordered at same time?

William P
November 10, 2020

This was perfect just what I needed in a mixture control cable . On the airplane and all is great!

Michael N
October 20, 2020

Product worked perfect

Sean L
January 3, 2020

Works flawlessly.smooth ratchet operation for oil cooler door

Shawn M
December 5, 2019

Well made cable and easy to install. Using for cabin heat and allows for easy adjustment and fine tuning.

Darin F
March 24, 2019

Excellent quality for the money, works great on my carb heat.

May 25, 2018


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: On the A-740 Ratchet Control Cable, how is the ratchet action applied and released? A twist of the handle?

This is not a locking cable. The shaft has internal notches, and as the knob is pushed in or pulled out you feel the ratchet effect which holds the cable in position.

Q: Regarding the A-740 Rachet Control: What is the diameter of the cable itself and the mounting hole in the panel?

The inner cable is .050" diameter, and the outer housing is 3/16" O.D.. The mounting hole is 3/8".

Q: A-0740 rachet control: the ratchet no longer works, i.e., it's a smooth push/pull without detents. Can this be fixed without taking the total control out? Just restoring the ratchet-dentent.

Per Vendor, First you would have to check if the spring is still in its slot. If it is, then you would have to take the total control out.

Q: Can the knobs be removed and replaced with metal ones that I have engraved? If so, what is the diameter and thread count on the knobs that are included (so I could match). Thanks.

The knobs can be removed if the cable is ordered that way, otherwise it is loctited on. The OD is 1 and the threads are 10-32. Please contact our sales department for price and lead time of special order controls.

Q: What is the maximum *useable* extension of the knob/control before the knob stops or is extended so far as to expose the .050 inner cable? Also, what is the diameter of the spiral casing?

The maximum extension is 3-3/8" and the diameter is 3/16.

Q: Is the A-740 ratchet control FAA Approved?

No. The only FAA PMA Approved ACS controls are the A-790-12 and the A-800-12.

Q: The detent pressure doesnt hold it in the position I want it. Is the a way to adjust the detent pressure?

No, the detent pressure cannot be adjusted.

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