FAA TSO LETTER OF APPROVAL
• AERO 452 TSO Approval - cover sheet for FAA certified aircraft -
[ Download File ]
• AERO 455, AERO 551, AERO 553 TSO Approval letter -
[ Download File ]
FAA Certification
When installed in accordance with this installation manual and the limitations, the installation of the model 452 is unlikely to have an appreciable effect on
the weight, balance, structural strength, reliability, operational characteristics, or other characteristics affecting the airworthiness of the aircraft, and should
therefore be eligible for installation as a minor alteration.
FAA Advisory Circular on CO
The above FAA circular provides information on the potential dangers of Carbon Monoxide contamination from faulty engine exhaust systems or cabin
heaters of the exhaust gas heat exchange type. It also discusses means of detection and procedures to follow when contamination is suspected.
FAA Requirements for CO in Aircaft during Certification.
FAR. 23.831 Ventilation in Aircraft.
(a) Each passenger and crew compartment must be suitably ventilated. Carbon monoxide concentration may not exceed one part in 20,000 parts of air (50
PPM).
Aero-152 Warning Levels shown below. Note: (252,352's, 353's,452's and 552 all alarm with 5 minutes if CO is above 50PPM)
*PPM- Parts Per Million
Caution - This product is intended to be used in aircraft enclosed cabins. Because of its super-sensitivity, it's not designed to be in compliance with
UL2034, OSHA, and other industry standards.
National Transportation Safety Board Recommends CO Detectors to be installed in all General Aviation Aircaft.
FAA CERTIFICATION / STC
FAA Certification / STC
When installed in accordance with this installation manual and the limitations that follow, the installation of the model 452 is unlikely to have an appreciable
effect on the weight, balance, structural strength, reliability, operational characteristics, or other characteristics affecting the airworthiness of the aircraft,
and should therefore be eligible for installation as a minor alteration.
Model Aero 452 has TSO certification and is STC approved for installation on certified aircraft. Customers have three options depending on their
relationship with their local FAA FISDO office (you must seek proper guidance prior to installation). 1) Install it as minor log book entry since the unit is TSO
approved as non essential equipment. 2) Install it using FAA Form 337 as minor alternation. 3) Install it per supplied STC on a Cessna 172. Data shown in
our download section.
However, no approval exists for the other panel-mount models of CO Guardian (models Aero 252, 352's, 353's, 551 and 553). Acceptance for the
installation and use of as a non-essential equipment (per AC 23-15, paragraph V, pg. 28), must be sought through your local FBO and the appropriate
offices of the Federal Aviation Administration or other certifying agency.
Some pilots have managed to get a field approval from the FAA on Form 337 for installation of Aero 352 on certified aircraft. A copy of one such approval is
452 Sample 337 FAA Form.
Sample 337 Model 552.
• AERO 452 TSO Approval - cover sheet for FAA certified aircraft -
[ Download File ]
• AERO 455, AERO 551, AERO 553 TSO Approval letter -
[ Download File ]
FAA Certification
When installed in accordance with this installation manual and the limitations, the installation of the model 452 is unlikely to have an appreciable effect on
the weight, balance, structural strength, reliability, operational characteristics, or other characteristics affecting the airworthiness of the aircraft, and should
therefore be eligible for installation as a minor alteration.
FAA Advisory Circular on CO
The above FAA circular provides information on the potential dangers of Carbon Monoxide contamination from faulty engine exhaust systems or cabin
heaters of the exhaust gas heat exchange type. It also discusses means of detection and procedures to follow when contamination is suspected.
FAA Requirements for CO in Aircaft during Certification.
FAR. 23.831 Ventilation in Aircraft.
(a) Each passenger and crew compartment must be suitably ventilated. Carbon monoxide concentration may not exceed one part in 20,000 parts of air (50
PPM).
Aero-152 Warning Levels shown below. Note: (252,352's, 353's,452's and 552 all alarm with 5 minutes if CO is above 50PPM)
*PPM- Parts Per Million
Caution - This product is intended to be used in aircraft enclosed cabins. Because of its super-sensitivity, it's not designed to be in compliance with
UL2034, OSHA, and other industry standards.
National Transportation Safety Board Recommends CO Detectors to be installed in all General Aviation Aircaft.
FAA CERTIFICATION / STC
FAA Certification / STC
When installed in accordance with this installation manual and the limitations that follow, the installation of the model 452 is unlikely to have an appreciable
effect on the weight, balance, structural strength, reliability, operational characteristics, or other characteristics affecting the airworthiness of the aircraft,
and should therefore be eligible for installation as a minor alteration.
Model Aero 452 has TSO certification and is STC approved for installation on certified aircraft. Customers have three options depending on their
relationship with their local FAA FISDO office (you must seek proper guidance prior to installation). 1) Install it as minor log book entry since the unit is TSO
approved as non essential equipment. 2) Install it using FAA Form 337 as minor alternation. 3) Install it per supplied STC on a Cessna 172. Data shown in
our download section.
However, no approval exists for the other panel-mount models of CO Guardian (models Aero 252, 352's, 353's, 551 and 553). Acceptance for the
installation and use of as a non-essential equipment (per AC 23-15, paragraph V, pg. 28), must be sought through your local FBO and the appropriate
offices of the Federal Aviation Administration or other certifying agency.
Some pilots have managed to get a field approval from the FAA on Form 337 for installation of Aero 352 on certified aircraft. A copy of one such approval is
452 Sample 337 FAA Form.
Sample 337 Model 552.
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Phone: (520) 889-1177, (800) 639-7139
By CO Guardian LLC.
