---
type: "Bill"
title: "AIRPORT AUTHORITIES-DRONES"
description: "Amends the Illinois Municipal Code. Makes a technical change in a Section concerning definitions."
jurisdiction: "us/states/il"
legislature: "Illinois General Assembly"
session: "100th"
identifier: "SB 421"
citation: "Illinois SB 421 (100th)"
classification: ["bill"]
subjects: []
status: "enacted"
primary_sponsors: []
version_count: 3
action_count: 58
vote_count: 4
first_action: "2017-01-24"
last_action: "2017-09-22"
source: "openstates"
source_identifier: "ocd-bill/b3cdbac1-e979-4041-8f63-94bb4e951402"
source_url: "http://ilga.gov/legislation/BillStatus.asp?DocNum=421&GAID=14&DocTypeID=SB&LegId=100362&SessionID=91&GA=100"
source_hash: "572c5a45c4d71432d5a9d2b8c935130fe14f01bfb8c01098edaf5322b59f70f6"
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-il"]
---

# Illinois SB 421 (100th) — AIRPORT AUTHORITIES-DRONES

Amends the Illinois Municipal Code. Makes a technical change in a Section concerning definitions.

## Version chain

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

1. **Introduced** (filed) — [source](http://ilga.gov/legislation/fulltext.asp?DocName=10000SB0421&GA=100&SessionId=91&DocTypeId=SB&LegID=100362&DocNum=421&GAID=14&Session=&print=true)
2. **Engrossed** (committee substitute) — [source](http://ilga.gov/legislation/fulltext.asp?DocName=10000SB0421eng&GA=100&SessionId=91&DocTypeId=SB&LegID=100362&DocNum=421&GAID=14&Session=&print=true)
3. **Enrolled** (enrolled) — [source](http://ilga.gov/legislation/fulltext.asp?DocName=10000SB0421enr&GA=100&SessionId=91&DocTypeId=SB&LegID=100362&DocNum=421&GAID=14&Session=&print=true)

## Votes

- Third Reading — **56–0** (pass) · upper
- Concurrence, Amendment 2 — **48–0** (pass) · upper
- Third Reading — **107–0** (pass) · lower
- Concurrence, Amendment 1 — **48–0** (pass) · upper

## Sponsors

- David S. Olsen — cosponsor (person)
- Thomas Cullerton — primary (person)

## Timeline

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

- **2017-01-24** Filed with Secretary by Sen. John J. Cullerton `filing`
- **2017-01-24** First Reading `reading-1`
- **2017-01-24** Referred to Assignments `referral-committee`
- **2017-02-28** Chief Sponsor Changed to Sen. Thomas Cullerton
- **2017-02-28** Assigned to Transportation `referral-committee`
- **2017-03-03** Senate Committee Amendment No. 1 Filed with Secretary by Sen. Thomas Cullerton `amendment-introduction`
- **2017-03-03** Senate Committee Amendment No. 1 Referred to Assignments `referral-committee`
- **2017-03-07** Senate Committee Amendment No. 1 Assignments Refers to Transportation
- **2017-03-14** Senate Committee Amendment No. 1 Adopted `amendment-passage`
- **2017-03-15** Do Pass as Amended Transportation; 011-000-000 `committee-passage`
- **2017-03-15** Placed on Calendar Order of 2nd Reading March 16, 2017
- **2017-03-30** Second Reading `reading-2`
- **2017-03-30** Placed on Calendar Order of 3rd Reading April 4, 2017
- **2017-03-30** Added as Chief Co-Sponsor Sen. Karen McConnaughay
- **2017-04-26** Third Reading - Passed; 056-000-000 `reading-3, passage`
- **2017-04-27** Arrived in House `introduction`
- **2017-04-27** Chief House Sponsor Rep. Martin J. Moylan
- **2017-04-27** First Reading `reading-1`
- **2017-04-27** Referred to Rules Committee `referral-committee`
- **2017-05-09** Assigned to Transportation: Vehicles & Safety Committee `referral-committee`
- **2017-05-17** Do Pass / Short Debate Transportation: Vehicles & Safety Committee; 009-000-000 `committee-passage`
- **2017-05-17** Placed on Calendar 2nd Reading - Short Debate
- **2017-05-24** Second Reading - Short Debate `reading-2`
- **2017-05-24** Held on Calendar Order of Second Reading - Short Debate `reading-2`
- **2017-05-26** Final Action Deadline Extended-9(b) May 31, 2017
- **2017-05-29** House Floor Amendment No. 1 Filed with Clerk by Rep. Martin J. Moylan `amendment-introduction`
- **2017-05-29** House Floor Amendment No. 1 Referred to Rules Committee `referral-committee`
- **2017-05-30** House Floor Amendment No. 1 Rules Refers to Transportation: Vehicles & Safety Committee
- **2017-05-31** House Floor Amendment No. 1 Recommends Be Adopted Transportation: Vehicles & Safety Committee; 006-000-000 `committee-passage-favorable`
- **2017-05-31** House Floor Amendment No. 2 Filed with Clerk by Rep. Martin J. Moylan `amendment-introduction`
- **2017-05-31** House Floor Amendment No. 2 Referred to Rules Committee `referral-committee`
- **2017-05-31** House Floor Amendment No. 2 Recommends Be Adopted Rules Committee; 005-000-000 `committee-passage-favorable`
- **2017-05-31** Final Action Deadline Extended-9(b) June 30, 2017
- **2017-06-25** Added Alternate Chief Co-Sponsor Rep. Christine Winger
- **2017-06-25** Added Alternate Chief Co-Sponsor Rep. David S. Olsen
- **2017-06-25** House Floor Amendment No. 1 Adopted `amendment-passage`
- **2017-06-25** House Floor Amendment No. 2 Adopted `amendment-passage`
- **2017-06-25** Placed on Calendar Order of 3rd Reading - Short Debate
- **2017-06-25** Alternate Chief Co-Sponsor Removed Rep. David S. Olsen
- **2017-06-25** Added Alternate Co-Sponsor Rep. David S. Olsen
- **2017-06-26** Third Reading - Short Debate - Passed 107-000-000 `reading-3, passage`
- **2017-06-27** Secretary's Desk - Concurrence House Amendment(s) 1, 2
- **2017-06-27** Placed on Calendar Order of Concurrence House Amendment(s) 1, 2 - June 28, 2017
- **2017-06-30** House Floor Amendment No. 1 Motion to Concur Filed with Secretary Sen. Thomas Cullerton `filing`
- **2017-06-30** House Floor Amendment No. 1 Motion to Concur Referred to Assignments `referral-committee`
- **2017-06-30** House Floor Amendment No. 2 Motion to Concur Filed with Secretary Sen. Thomas Cullerton `filing`
- **2017-06-30** House Floor Amendment No. 2 Motion to Concur Referred to Assignments `referral-committee`
- **2017-06-30** House Floor Amendment No. 1 Motion to Concur Assignments Referred to Transportation `referral-committee`
- **2017-06-30** House Floor Amendment No. 2 Motion to Concur Assignments Referred to Transportation `referral-committee`
- **2017-06-30** House Floor Amendment No. 1 Motion To Concur Recommended Do Adopt Transportation; 012-000-000
- **2017-06-30** House Floor Amendment No. 2 Motion To Concur Recommended Do Adopt Transportation; 012-000-000
- **2017-07-01** House Floor Amendment No. 1 Senate Concurs 048-000-000
- **2017-07-01** House Floor Amendment No. 2 Senate Concurs 048-000-000
- **2017-07-01** Passed Both Houses
- **2017-07-28** Sent to the Governor `executive-receipt`
- **2017-09-22** Governor Approved `executive-signature`
- **2017-09-22** Effective Date June 1, 2018
- **2017-09-22** Public Act . . . . . . . . . 100-0529 `became-law`

## Source

OpenStates / OpenCivicData bulk snapshot [2026-07-01](https://data.openstates.org/daily/2026-07-01/public.pgdump); origin `ocd-bill/b3cdbac1-e979-4041-8f63-94bb4e951402`. Confidence: reported (aggregated from official Illinois legislature records).