---
kind: "section"
citation: "14 C.F.R. § 450.123"
title: "14"
number: "450.123"
heading: "Population exposure analysis."
url: "https://uscodex.org/cfr/14/450.123"
---

# §450.123. Population exposure analysis.

- (a) **General.** A flight safety analysis must account for the distribution of people for the entire region where there is a significant probability of impact of hazardous debris.
- (b) **Constraints.** The exposure analysis must—
  - (1) Characterize the distribution of people both geographically and temporally;
  - (2) Account for the distribution of people among structures and vehicle types;
  - (3) Use reliable, accurate, and timely source data; and
  - (4) **Account for vulnerability of people to hazardous debris effects.**
- (c) **Application requirements.** An applicant must submit:
  - (1) A description of the methods used to develop the exposure input data in accordance with [§ 450.115(c)](/cfr/14/450.115.md?p=c), and
  - (2) **Complete population exposure data, in tabular form.**

## Notes

### Authority

Authority: 51 U.S.C. 50901-50923.

### Source

Source: Docket No. FAA-2019-0229, Amdt. 450-2, 85 FR 79719, Dec. 10, 202085 FR 79739, Dec. 10, 2020, unless otherwise noted.