Aircraft CO Detector Recalibration / Overhaul

Because of their sensitive nature, all carbon monoxide (CO) detector sensors require replacement after a period of time to remain accurate. All Guardian Avionics / CO Guardian aviation CO detectors feature a self-test at power on for each flight. If the unit shows a failure of the CO sensor upon power up, you must send the unit to Guardian Avionics for replacement or overhaul. Depending on level of use, storage environment, and flight environment, most CO sensors have a usable life of 5-7 years. Though our units have a required Time Before Overhaul (TBO) of Seven (7) years from point of installation regardless of self-test results, we recommend sending in your unit for replacement / recalibration every 5 years during your annual maintenance inspection to assure safety and accuracy of your unit.

Below you will find pricing for replacement or recalibration of your CO detector and the process to send it out.

  • Replacement units are factory-new units replacing your existing unit and pricing is based on a core return.
  • Recalibrated units are remanufactured units or your own unit remanufactured and pricing is also based on a core return. Note that the refundable core deposits listed for each product will be added to your order and will be refunded upon receipt of your core.

The procedure for recalibration is as follows:

 

    • Remove component and note full model number and unit serial number.
    • Apply for an RMA Number at: https://www.guardianavionics.com/rma-request or call 520-889-1177 (M-F, 8am to 5pm MST) - the RMA number will be emailed back to you.
    • Order a recalibration or new replacement using the listings below.
    • Send unit in under RMA number to: Guardian Avionics, Attn: RMA #___, 1840 East Valencia Road Suite #216, Tucson, AZ 85706
    • Once unit is received by Guardian Avionics, the recalibrated or replaced unit will be shipped within 3-5 business days unless specified. Core charge will be refunded.
    • Upon receipt of the recalibrated/replaced unit, a fresh 1 year limited warranty applies and the unit has a fresh 7 year TBO.

 

Are you overhauling an Aero 452-201-006?
The Aero 452-201-006 is a legacy OEM unit that has been replaced by the 452-201-010 - Please order that product from the listing below.

Are you overhauling an Aero 452-101-001 through -009?
These units have been replaced by the 452-101-011, so please order replacement or remanufacture of the 452-101-011 below and add the required harness 452-201-098 to your order for compatibility.

Are you overhauling an Aero 452-201-003 through -004?
These units have been replaced by the 452-201-011, so please order replacement or remanufacture of the 452-201-011 below and add the required harness 452-201-099 to your order for compatibility.


Select your current CO detector 

AERO 353 Series                                                            AERO 553 Series                                                  AERO 454 Series                 
     
     353-101                                                                                             553-101-011                                                                            454-201-002B OEM     

     353-201                                                                                                                                                                                              454-201-101

     353P-101                                                                                                                                                                                            454-201-011

     353P-201     


AERO 551 Series                                                              AERO 452 Series                                 Harness Replacement Options 

     551-101-002                                                                                             452-101-011                                                        AERO 452-201-001 thru -009
                          
                                                                                                                    452-201-011                                                          AERO 452-201-009 thru -004
 AERO 455 Series
                                                                                                                   452-201-010 OEM              
    
   455-101-001                                                                                              452-201-004*

                                                                                                                    452-201-006*

                                                                                                                    452-101-001 thru -009*        

                                                        * All 452-101-004 thru -009 are replaced by the 452-101-011 with harness
                                                        * All 452-201-004 thru -009 are replaced by the 452-201-011 with harness