ecfr-title-14

reference corpus · status live · category STD (Standards, specs & regulations) · lane A · refresh pinned

What an agent uses it for

a pilot or mechanic queries this for the current FAR text — visibility minimums, transponder airspace, inspection intervals, right-of-way

Use it
xerj corpus add --from https://raw.githubusercontent.com/xerj-org/xerj/corpus-hub/tools/xerj-code/hub/ecfr-title-14.json
xerj corpus index ecfr-title-14 → xerj code ecfr-title-14 "your question"

Sources & pins

source	pin	licence	size	review note
corpus-ecfr-title-14	0520b312d964…	US-government public domain (CFR text, 17 USC 105)	11.2 MB / 6,421 files	eCFR Title 14 (Aeronautics and Space - FARs) snapshot, AMDDATE 2026-07-24, downloaded 2026-10-04 from GPO bulk API. Same per-section split and tooling as the live ecfr-title-12/26/29 mirrors (split_ecfr.py). G7 graded 2026-10-04: 5/5 pass 5/5 relevant (91.155 visibility, 91.215 transponder, 91.119 min safe altitude, 91.409 inspection interval, 91.113 right-of-way). Build note: first index on the s

11.2 MB across 6,421 files · added 2026-10-04

Rights

US-government public domain (CFR text, 17 USC 105) — redistribution permitted with attribution per the licence review . The review block records a human opening each licence file at the pin; detector output is a hint, never the verdict.

Retrieval spot-check (G7)

median 5.0/5 relevant —

Q: VFR minimum flight visibility and distance from clouds by airspace class
expect: parts/part-91/sec-91.155.txt
top-5: corpus-ecfr-title-14/parts/part-91/sec-91.155.txt · corpus-ecfr-title-14/parts/part-103/sec-103.23.txt · corpus-ecfr-title-14/parts/part-135/sec-135.613.txt · corpus-ecfr-title-14/parts/part-91/sec-91.129.txt · corpus-ecfr-title-14/parts/part-91/sec-91.155.txt
grade: relevant

Q: when is an operable transponder with Mode C required to operate an aircraft
expect: parts/part-91/sec-91.215.txt
top-5: corpus-ecfr-title-14/parts/part-91/sec-91.215.txt · corpus-ecfr-title-14/parts/part-91/sec-91.215.txt · corpus-ecfr-title-14/parts/part-91/sec-91.217.txt · corpus-ecfr-title-14/parts/part-99/sec-99.13.txt · corpus-ecfr-title-14/parts/part-93/sec-93.339.txt
grade: relevant

Q: minimum safe altitude flying over a congested city
expect: parts/part-91/sec-91.119.txt
top-5: corpus-ecfr-title-14/parts/part-91/sec-91.119.txt · corpus-ecfr-title-14/parts/part-103/sec-103.15.txt · corpus-ecfr-title-14/parts/part-137/sec-137.51.txt · corpus-ecfr-title-14/parts/part-105/sec-105.21.txt · corpus-ecfr-title-14/parts/part-91/sec-91.303.txt
grade: relevant

Q: how often must an aircraft have an annual inspection to be operated
expect: parts/part-91/sec-91.409.txt
top-5: corpus-ecfr-title-14/parts/part-91/sec-91.409.txt · corpus-ecfr-title-14/parts/part-145/sec-145.211.txt · corpus-ecfr-title-14/parts/part-121/sec-121.629.txt · corpus-ecfr-title-14/parts/part-136/sec-136.1.txt · corpus-ecfr-title-14/parts/part-137/sec-137.53.txt
grade: relevant

Q: which aircraft has the right of way when two aircraft are converging
expect: parts/part-91/sec-91.113.txt
top-5: corpus-ecfr-title-14/parts/part-91/sec-91.113.txt · corpus-ecfr-title-14/parts/part-91/sec-91.113.txt · corpus-ecfr-title-14/parts/part-91/sec-91.115.txt · corpus-ecfr-title-14/parts/part-93/sec-93.163.txt · corpus-ecfr-title-14/parts/part-107/sec-107.37.txt
grade: relevant