The following list of sign convention notation is recommended for adoption. Note the sign convention for most quantities is already fixed by the AIAA Recommended Practice [ AIAA92], so this is actually a list of abbreviations for typical sign conventions:
| Acronym | Meaning |
|---|---|
| +AFT | Positive aft |
| +ANR | Positive aircraft nose right |
| +ANU | Positive aircraft nose up |
| +CWFN | Positive clockwise from north |
| +DN | Positive down |
| +E | Positive eastward |
| +FWD | Positive forward |
| +LFT | Positive left |
| +N | Positive northward |
| +OUT | Positive outward |
| +POS | Always positive |
| +RCL | Positive right of centerline |
| +RT | Positive right |
| +RWD | Positive right wing down |
| +TED | Positive trailing edge down |
| +TEL | Positive trailing edge left |
| +THR | Positive beyond threshold |
| +UP | Positive up |
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