CEN25LA116

NTSB accident investigation · Robinson Helicopter R44 II · Chicago, IL · March 10, 2025

Accident · No injuriesClass 3 · LimitedPreliminary report
Date
March 10, 2025, 18:30 local (23:30 UTC)
Place
Chicago, IL
Injuries
3 uninjured
Damage
Substantial damage
Phase of flight
Enroute
Aircraft
N128AFRobinson Helicopter R44 II
Defining event
Enroute-cruise: Unknown or undetermined
Weather
Visual (VMC) · Dusk
Status
Investigation ongoing
Investigation class
Class 3
NTSB office
Central Region
Parties
FAA
Case key
199828

From the NTSB’s public API. By law, NTSB reports can’t be used as evidence in lawsuits over the accident.

On this page

Preliminary report

What NTSB knew early in the investigation. It may change in the final report.

On March 10, 2025, about 18:30 central daylight time, a Robinson Helicopter R44 II, N128AF was substantially damaged when it was involved in an accident near Chicago, Illinois. The pilot and both passengers were not injured. The helicopter was operated under the provisions of Title 14 Code of Federal Regulations Part 91 sightseeing flight. The helicopter departed Lansing Municipal Airport (IGQ), Lansing, Illinois about 17:45. The pilot stated that they flew north, about 25 nm, along the Lake Michigan shoreline to Navy Pier, and then proceeded south back towards IGQ at an altitude of about 1,000 ft above ground level. About 4 nm south of Navy Pier, the pilot reported that the helicopter clutch light came on but only for about 5 seconds. Shortly after, the pilot said he could smell burning rubber and then the clutch light illuminated again. He pulled the clutch circuit breaker and was preparing to land as soon as practical when the tail section of the helicopter began to vibrate and then he heard a loud bang. The pilot autorotated the helicopter to an open area on a golf course. The pilot and both passengers exited the helicopter uninjured. After landing, the pilot inspected the helicopter and discovered that the tail boom was substantially damaged because of the autorotation. The helicopter was transported to a secure location for further examination.

Sequence of events

The events NTSB coded, in order, by phase of flight. The defining event is the one that best describes the accident. Under each, the cases with the same event anywhere in their sequence.

Aircraft

Registration
N128AF
Reported as
Robinson Helicopter R44 II
Category
Helicopter
Serial number
11475
Built
2006
Damage
Substantial damage
Flight
Business · Part 91
Operator
Summerskyz Inc
Registered owner
Summerskyz Inc
Departed
IGQ · Lansing, IL
Airport
IGQ · Lansing Municipal

Matched to the registry by N-number and the event date; the registry’s history has gaps, so older matches can be wrong. Compare the reported make and model.

Weather

Conditions
Visual (VMC) · Dusk
Wind
210° at 11 knots, gusting 19
Visibility
10 statute miles
Lowest ceiling
25,000 ft broken
Temperature
64 °F, dew point 32 °F
Altimeter
29.61 inHg
Observed at
KORD, 19 nm away
METAR
KORD 102351Z 21011G19KT 10SM BKN250 18/00 A2961