Federal Aviation Administration Commercial Space Transportation (AST)
87,214Words in 22 parts
14.7Restriction density (per 1,000 words)
17.3Reading grade
43.4%Unchanged since 2017
0Flagged parts
2026-03-10Last change
Section changes per year
From the eCFR versioner, for the parts that the agency owns now. Before 2017 is the baseline load.
Text and size
- Sentences
- 28.4 words on average; 20.5% over 40 words; 13.9% passive; 11.0 cross-references per 1,000 words
- Sentence types
- definition 6.5% · prohibition 1.6% · paperwork 8.7% · obligation 24.4% · permission 8.3% · other 50.5%
- Checksum
447a84407c8131cfd6a619dccdbef6e2183d059e2330cca20d6e25e06da6648a
Review candidates in this agency
| Rank | Part | Words | Score |
|---|---|---|---|
| 1,634 | 14 CFR 420
LICENSE TO OPERATE A LAUNCH SITE
High signals: Size
+1.1 SD · Directive share
+1.0 SD |
21,880 | 0.38 |
| 1,861 | 14 CFR 440
FINANCIAL RESPONSIBILITY
High signals: none above 1 SD; ranked by the combined score |
9,201 | 0.31 |
| 2,033 | 14 CFR 406
INVESTIGATIONS, ENFORCEMENT, AND ADMINISTRATIVE REVIEW
High signals: none above 1 SD; ranked by the combined score |
14,337 | 0.27 |
| 2,111 | 14 CFR 450
LAUNCH AND REENTRY LICENSE REQUIREMENTS
High signals: Size
+1.1 SD |
21,497 | 0.25 |
| 2,913 | 14 CFR 460
HUMAN SPACE FLIGHT REQUIREMENTS
High signals: Restriction density
+1.2 SD |
2,760 | 0.06 |
| 3,057 | 14 CFR 413
LICENSE APPLICATION PROCEDURES
High signals: Paperwork share
+1.5 SD |
2,715 | 0.03 |
| 3,444 | 14 CFR 437
EXPERIMENTAL PERMITS
High signals: Restriction density
+1.4 SD |
4,564 | -0.06 |
| 4,240 | 14 CFR 414
SAFETY ELEMENT APPROVALS
High signals: none above 1 SD; ranked by the combined score |
3,421 | -0.24 |
| 6,227 | 14 CFR 404
PETITION AND RULEMAKING PROCEDURES
High signals: none above 1 SD; ranked by the combined score |
1,482 | -0.99 |
| 6,228 | 14 CFR 401
ORGANIZATION AND DEFINITIONS
High signals: none above 1 SD; ranked by the combined score |
3,413 | -1.00 |
Score: the mean of six signals, in standard deviations (SD). Across the CFR, the top 641 of 6,402 ranked parts (10%) get a flag for review; this list shows 10. A flag is not a finding.
Statutes behind the most text
- 51 U.S.C. 50901: 83,252 words in 12 parts (95.5% of this agency's text)
- 51 U.S.C. 50101: 3,931 words in 2 parts (4.5% of this agency's text)
From the authority notes. A citation is not proof that the statute requires the rule.
Largest parts
- 14 CFR 420: LICENSE TO OPERATE A LAUNCH SITE (21,880 words)
- 14 CFR 450: LAUNCH AND REENTRY LICENSE REQUIREMENTS (21,497 words)
- 14 CFR 406: INVESTIGATIONS, ENFORCEMENT, AND ADMINISTRATIVE REVIEW (14,337 words)
- 14 CFR 440: FINANCIAL RESPONSIBILITY (9,201 words)
- 14 CFR 437: EXPERIMENTAL PERMITS (4,564 words)
- 14 CFR 414: SAFETY ELEMENT APPROVALS (3,421 words)
- 14 CFR 401: ORGANIZATION AND DEFINITIONS (3,413 words)
- 14 CFR 460: HUMAN SPACE FLIGHT REQUIREMENTS (2,760 words)
- 14 CFR 413: LICENSE APPLICATION PROCEDURES (2,715 words)
- 14 CFR 404: PETITION AND RULEMAKING PROCEDURES (1,482 words)
Reading grade and sentence types are approximate. Simple rules label each sentence; the first match wins.