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Last updated: 27 October 2021
Datum:donderdag 6 november 1969
Type:Silhouette image of generic LJ23 model; specific model in this crash may look slightly different
Learjet 23
Luchtvaartmaatschappij:Mack Truck
Registratie: N1021B
Constructienummer: 23-086
Bemanning:slachtoffers: 2 / inzittenden: 2
Passagiers:slachtoffers: 5 / inzittenden: 5
Totaal:slachtoffers: 7 / inzittenden: 7
Schade: Vernield
Gevolgen: Written off (damaged beyond repair)
Plaats:NE off Racine-Horlick Airport, WI (RAC) (   Verenigde Staten)
Fase: Nadering (APR)
Soort vlucht:Zaken
Vliegveld van vertrek:Benton Harbor-Ross Field, MI (BEH/KBEH), Verenigde Staten
Vliegveld van aankomst:Racine-Horlick Airport, WI (RAC/KRAC), Verenigde Staten
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:

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

Accident investigation:
Investigating agency: NTSB
Status: Investigation completed
Duration: 10 months
Accident number: NTSB-AAR-70-21
Download report: Final report



NTSB issued 1 Safety Recommendation

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photo of Learjet-23-N1021B
accident date: 06-11-1969
type: Learjet 23
registration: N1021B

Deze kaart geeft het vliegveld van vetrek weer en de geplande bestemming van de vlucht. De lijn tussen de vliegvelden geeft niet de exacte vliegroute weer.
De afstand tussen Benton Harbor-Ross Field, MI en Racine-Horlick Airport, WI bedraagt 133 km (83 miles).
Accident location: Approximate; accuracy within a few kilometers.

This information is not presented as the Flight Safety Foundation or the Aviation Safety Network’s opinion as to the cause of the accident. It is preliminary and is based on the facts as they are known at this time.
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Learjet 23

  • 104 built
  • 12e ongeval
  • 7e dodelijk ongeval
  • 2e zwaarste ongeval
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