---
type: "Bill"
title: "Air Navigation Protection From Hazards Act of 2017"
description: "Air Navigation Protection From Hazards Act of 2017"
jurisdiction: "us/states/md"
legislature: "Maryland General Assembly"
session: "2017"
identifier: "HB 874"
citation: "Maryland HB 874 (2017)"
classification: ["bill"]
subjects: ["Natural Resources - Generally", "Transportation - Generally", "Aircraft", "Airports", "Boundaries", "Conservation", "Forests and Parks", "Safety", "Trees"]
status: "enacted"
primary_sponsors: ["Cassilly and Szeliga"]
version_count: 1
action_count: 14
vote_count: 2
first_action: "2017-02-06"
last_action: "2017-05-04"
source: "openstates"
source_identifier: "ocd-bill/c1d34477-9d3d-4b15-9404-a7e62920eb34"
source_url: "http://mgaleg.maryland.gov/webmga/frmMain.aspx?id=HB874&stab=01&pid=billpage&tab=subject3&ys=2017rs"
source_hash: "f4a03ebd77ddb21be0d58ad8bad87a33de5c97682593d61d2bfd3a7be4045cd6"
vintage: "2026-07-01"
source_snapshot: "https://data.openstates.org/daily/2026-07-01/public.pgdump"
retrieved_at: "2026-07-06"
confidence: "reported"
tags: ["legislation", "bill", "us-md"]
---

# Maryland HB 874 (2017) — Air Navigation Protection From Hazards Act of 2017

## Version chain

The bill's text revisions, in order — the diff chain from filing to enrollment.

1. **Bill Text** (committee substitute) — [source](http://mgaleg.maryland.gov/2017RS/bills/hb/hb0874f.pdf)

## Votes

- Third Reading — **122–0** (pass) · legislature
- Third Reading — **47–0** (pass) · legislature

## Sponsors

- Cassilly and Szeliga — primary (person)

## Timeline

The legislative action history — every referral, reading, and vote.

- **2017-02-06** First Reading Environment and Transportation `referral-committee`
- **2017-02-08** Hearing 3/01 at 1:00 p.m.
- **2017-03-18** Favorable with Amendments Report by Environment and Transportation `committee-passage-favorable`
- **2017-03-18** Favorable with Amendments {540314/1 Report Adopted `committee-passage-favorable`
- **2017-03-18** Second Reading Passed with Amendments
- **2017-03-20** Third Reading Passed (122-0) `passage`
- **2017-03-20** First Reading Education, Health, and Environmental Affairs `referral-committee`
- **2017-03-22** Hearing 4/04 at 1:00 p.m.
- **2017-04-07** Favorable Report by Education, Health, and Environmental Affairs `committee-passage-favorable`
- **2017-04-10** Favorable Report Adopted `committee-passage-favorable`
- **2017-04-10** Second Reading Passed
- **2017-04-10** Third Reading Passed (47-0) `passage`
- **2017-04-10** Returned Passed
- **2017-05-04** Approved by the Governor - Chapter 464 `executive-signature`

## Source

OpenStates / OpenCivicData bulk snapshot [2026-07-01](https://data.openstates.org/daily/2026-07-01/public.pgdump); origin `ocd-bill/c1d34477-9d3d-4b15-9404-a7e62920eb34`. Confidence: reported (aggregated from official Maryland legislature records).