---
type: "Bill"
title: "Prohibit interference with aerial wildfire suppression"
description: "Prohibit interference with aerial wildfire suppression"
jurisdiction: "us/states/mt"
legislature: "Montana Legislature"
session: "2017"
identifier: "HB 644"
citation: "Montana HB 644 (2017)"
classification: ["bill"]
subjects: ["Fires and Fire Protection", "Local Government (see also: City Subjects; County Subjects)", "Revenue", "Local", "Revenue", "State", "Transportation (see also: Motor Vehicles; Taxation--Transportation)"]
status: "enacted"
primary_sponsors: ["Willis Curdy"]
version_count: 1
action_count: 59
vote_count: 7
first_action: "2016-11-16"
last_action: "2017-05-04"
source: "openstates"
source_identifier: "ocd-bill/b02f0f3c-6daa-43b9-a1e2-bf73e3bebdae"
source_url: "http://laws.leg.mt.gov/legprd/LAW0203W$BSRV.ActionQuery?P_SESS=20171&P_BLTP_BILL_TYP_CD=&P_BILL_NO=&P_BILL_DFT_NO=LC0921&P_CHPT_NO=&Z_ACTION=Find&P_SBJT_SBJ_CD=&P_ENTY_ID_SEQ="
source_hash: "283177ec04f4da20cd12597f5792120eecf76d2e0a91144516871b5bba21e508"
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-mt"]
---

# Montana HB 644 (2017) — Prohibit interference with aerial wildfire suppression

## Version chain

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

1. **Enrolled** (enrolled) — [source](http://leg.mt.gov/bills/2017/BillPdf/HB0644.pdf)

## Votes

- Do Pass As Amended — **69–31** (pass) · legislature
- DO PASS — **9–6** (pass) · legislature
- AMD-002 Curdy D/PASS — **96–4** (pass) · legislature
- Do Concur — **47–2** (pass) · legislature
- BE CONCURRED IN — **12–0** (pass) · legislature
- Do Pass — **63–37** (pass) · legislature
- Do Concur — **49–1** (pass) · legislature

## Sponsors

- Willis Curdy — primary (person)

## Timeline

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

- **2016-11-16** Draft Request Received
- **2016-11-18** Draft On Hold
- **2017-01-02** Draft Taken Off Hold
- **2017-01-02** Fiscal Note Probable
- **2017-01-02** Draft to Requester for Review
- **2017-01-16** Draft On Hold
- **2017-03-17** Draft Taken Off Hold
- **2017-03-17** Draft in Legal Review
- **2017-03-17** Draft in Edit
- **2017-03-18** Draft to Drafter - Edit Review [KWK]
- **2017-03-20** Draft in Input/Proofing
- **2017-03-20** Draft in Final Drafter Review
- **2017-03-20** Bill Draft Text Available Electronically
- **2017-03-21** Draft Back for Redo
- **2017-03-21** Draft in Legal Review
- **2017-03-21** Draft to Drafter - Edit Review [KWK]
- **2017-03-22** Draft in Final Drafter Review
- **2017-03-22** Bill Draft Text Available Electronically
- **2017-03-22** Executive Director Review
- **2017-03-22** Draft in Assembly
- **2017-03-22** Executive Director Final Review
- **2017-03-22** Draft Ready for Delivery
- **2017-03-22** Draft Delivered to Requester
- **2017-03-22** Introduced `introduction`
- **2017-03-22** Fiscal Note Requested
- **2017-03-22** Referred to Committee `referral-committee`
- **2017-03-22** First Reading `reading-1`
- **2017-03-22** Introduced Bill Text Available Electronically
- **2017-03-24** Hearing
- **2017-03-24** Committee Executive Action--Bill Passed `committee-passage`
- **2017-03-27** Fiscal Note Received
- **2017-03-27** Fiscal Note Signed
- **2017-03-27** Fiscal Note Printed
- **2017-03-27** Committee Report--Bill Passed `committee-passage`
- **2017-03-30** Scheduled for 2nd Reading
- **2017-03-30** 2nd Reading Motion to Amend Carried
- **2017-03-30** 2nd Reading Passed as Amended `reading-2`
- **2017-03-30** Printed - New Version Available
- **2017-03-31** Scheduled for 3rd Reading
- **2017-03-31** 3rd Reading Passed `passage, reading-3`
- **2017-03-31** Transmitted to Senate
- **2017-04-01** First Reading `reading-1`
- **2017-04-03** Referred to Committee `referral-committee`
- **2017-04-10** Hearing
- **2017-04-12** Committee Executive Action--Bill Concurred
- **2017-04-12** Committee Report--Bill Concurred
- **2017-04-18** Scheduled for 2nd Reading
- **2017-04-18** 2nd Reading Concurred `reading-2`
- **2017-04-19** Scheduled for 3rd Reading
- **2017-04-19** 3rd Reading Concurred `passage, reading-3`
- **2017-04-19** Returned to House
- **2017-04-20** Sent to Enrolling
- **2017-04-20** Printed - Enrolled Version Available
- **2017-04-20** Returned from Enrolling
- **2017-04-26** Signed by Speaker
- **2017-04-29** Signed by President
- **2017-05-01** Transmitted to Governor `executive-receipt`
- **2017-05-03** Signed by Governor `executive-signature`
- **2017-05-04** Chapter Number Assigned

## Source

OpenStates / OpenCivicData bulk snapshot [2026-07-01](https://data.openstates.org/daily/2026-07-01/public.pgdump); origin `ocd-bill/b02f0f3c-6daa-43b9-a1e2-bf73e3bebdae`. Confidence: reported (aggregated from official Montana legislature records).