12.Documenting ADS-B OUT System Performance Verification.
Following system performance verification of the ADS-B OUT installation by OFE and/or ground testing, document the results of the system performance in the aircraft maintenance record per 14 CFR § 43. When system performance is found acceptable, include the statement, “The installed ADS-B OUT system was shown to meet the equipment requirements of 14 CFR § 91.227” in the aircraft maintenance records.
(a)Execute FAA Form 337
Note: Upon completion of the alteration for the ADS-B OUT system, if the ground testing method is not used and only the OFE method is employed, the aircraft may be approved for return to service with ADS-B OUT system use limited to use for OFE purposes only.
(i)When using an OFE to determine compliance, complete Form 337 per the example provided in Attachment 5 of this document to record the ADS-B OUT alteration. This Form 337 must be completed prior to returning the aircraft to service. Once the OFE has been accomplished and it has been established that the system is compliant with 14 CFR § 91.227, an additional Form 337 should be completed to record compliance (see Attachment 6). Block 8 of the second Form 337 should include the following statement: “The installed ADS-B OUT system has been shown to meet the equipment requirements of 14 CFR § 91.227.” This Form 337 serves as a permanent record of ADS-B OUT system compliance at installation.
(ii)When using ground/ramp test equipment to establish compliance with14 CFR § 91.227, complete Form 337 and reference Attachment 5 as an example. Upon determining that the system complies with the 14 CFR § 91.227, include the following statement in block 8 of Form 337: “The installed ADS-B OUT system has been shown to meet the equipment requirements of 14 CFR § 91.227.”
(iii)Include the ADS-B OUT transmitter and position source make/model information in block 8 of Form 337 as shown in Attachment 5.
(iv)In situations where no further FAA approval is sought, the installer should include the following information in Block 3 of Form 337. “This ADS-B OUT system installation was completed using approved data from STC SX-XXXXX as per FAA Policy Memorandum Installation Approval for ADS-B OUT Systems, (current revision).” Reference Attachment 4 for an example of Form 337, Block 3 entry.
(v)Submit completed hardcopy Form 337s to the Aircraft Registration Branch, AFS-750, P.O. box 25504, Oklahoma City, Oklahoma 73125. Submittal of electronic Form 337 is also acceptable.
(OFE) - Operational Flight Evaluation