Accident Learjet 23 N1021B, Thursday 6 November 1969
ASN logo

Date:Thursday 6 November 1969
Type:Silhouette image of generic LJ23 model; specific model in this crash may look slightly different    
Learjet 23
Owner/operator:Mack Truck
Registration: N1021B
MSN: 23-086
Year of manufacture:1966
Fatalities:Fatalities: 7 / Occupants: 7
Other fatalities:0
Aircraft damage: Destroyed, written off
Location:NE off Racine-Horlick Airport, WI (RAC) -   United States of America
Phase: Unknown
Departure airport:Benton Harbor-Ross Field, MI (BEH/KBEH)
Destination airport:Racine-Horlick Airport, WI (RAC/KRAC)
Investigating agency: NTSB
Confidence Rating: Accident investigation report completed and information captured
Learjet N1021B, operated by Mack Truck, Inc., crashed into Lake Michigan, USA, while executing an instrument approach to runway 22 at the Racine-Horlick Airport, Wisconsin, USA. The flight had departed from Benton Harbor, Michigan, on an Instrument Flight Rules flight plan en route to Racine. The flight had originated at Allentown earlier in the day. There were seven people aboard the
aircraft; the pilot, copilot, and five passengers.
Shortly after the accident, a small amount of wreckage was recovered from the surface of the water. The flight was being vectored
by radar to the Automatic Direction Finder final approach course to runway 22 by Milwaukee Approach Control. Radar contact was lost shortly after the flight was advised that it was passing the Marion Intersection, a radar fix 3.6 nautical miles northeast of the radio beacon which is located on the southern boundary of the airport.

PROBABLE CAUSE: "The continued descent below the prescribed approach path profile, for reasons unknown."

Accident investigation:
Investigating agency: NTSB
Report number: CHI70A0027
Status: Investigation completed
Duration: 5 months
Download report: Final report




  • 92nd worst accident in 1969
  • 2nd worst accident of this aircraft type
  • 2nd worst accident of this aircraft type at the time



photo (c) Gerald Asher; Allentown-Lehigh Valley International Airport, PA (ABE/KABE); 1968

Revision history:


The Aviation Safety Network is an exclusive service provided by:
Quick Links:

CONNECT WITH US: FSF on social media FSF Facebook FSF Twitter FSF Youtube FSF LinkedIn FSF Instagram

©2024 Flight Safety Foundation

1920 Ballenger Av, 4th Fl.
Alexandria, Virginia 22314