Data link communications LOA A056 (CPDLC/ADS-C, FANS 1/A)
LOA A056 · 14 CFR 91.703; ICAO Doc 10037
When you need it
Data link use in oceanic/domestic CPDLC
What the FAA does with it
Approved LOA, submitted by FSDO (Part 91 streamlined; WebOPSS for 135).
What you'll need to provide
AFM/STC data link supplement, AMJ, training, CSP contracts, PORT sign-up
What the FSDO looks for
Inspectors evaluate submissions using FAA Order 8900.1 guidance and, for certificate holders, SAS Data Collection Tools.
- 8900.1: V3 C18 S3 Part A Operations Specifications: General (CHG 1021, Current) | V3 C18 S15 Streamlined Part 91 Operational Approvals (CHG 973, Current) | V4 C1 S1 General Navigation Concepts, FAA and International Civil Avi (CHG 1018, Current)
- Advisory Circulars: AC 90-117
- DCTs: ED_3.2.3_N_OP_V3.0; ED_3.2.3_B_OP_V22.0; ED_3.2.3_C_OP_V22.0; ED_3.2.3_E_OP_V22.0; EP_3.2.3_N_OP_V2.0; EP_3.2.3_B_OP_V18.0; EP_3.2.3_B_OP_V21.0; EP_3.2.3_C_OP_V18.0; EP_3.2.3_C_OP_V21.0; EP_3.2.3_D_OP_V17.0; EP_3.2.3_D_OP_V20.0; EP_3.2.3_E_OP_V18.0; EP_3.2.3_E_OP_V21.0; ED_4.6.1_N_AW_V3.0; ED_4.6.1_B_AW_V35.0; ED_4.6.1_B_AW_V39.0; ED_4.6.1_C_AW_V34.0; ED_4.6.1_C_AW_V38.0; ED_4.6.1_E_AW_V34.0; ED_4
Common reasons submissions are returned
- Aircraft data (make, model, serial, N-number) inconsistent across the application, the document and the registration certificate
- Outdated revision of a referenced AC, MMEL or template
- Missing signatures, dates or revision control on each page
- Missing required attachments: AFM/STC data link supplement, AMJ, training, CSP contracts, PORT sign-up
- Submitting to the wrong office or by the wrong method (expected: FSDO (Part 91 streamlined; WebOPSS for 135))
General issues drawn from the requirements above, not statistics.
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Sources: the regulations, ACs and 8900.1 sections listed above (public FAA documents). Guides explain requirements; they are not the document and not legal advice.
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