Hop! E170 at Toulouse on May 11th 2024, unsafe gear
Last Update: February 11, 2026 / 21:52:54 GMT/Zulu time
Incident Facts
Date of incident
May 11, 2024
Classification
Incident
Cause
Unsafe gear
Airline
Hop!
Flight number
AF-4190
Departure
Paris Charles de Gaulle, France
Destination
Toulouse, France
Aircraft Registration
F-HBXI
Aircraft Type
Embraer ERJ-170
ICAO Type Designator
E170
The French BEA announced they have dispatched four investigators on site, the aircraft had an anomaly on the landing gear position indicator and declared emergency.
The aircraft is still on the ground in Toulouse 11 days after landing.
On May 22nd 2024 the BEA reported the aircraft had a left main gear unlocked indication. The aircraft landed on runway 14R and stopped on the runway. The occurrence was rated a serious incident and is being investigated.
On Feb 11th 2026 the BEA released their final report concluding the probable causes of the incident were:
Scenario
When the landing gears were extended during the first approach to Toulouse-Blagnac airport, the locking-stay bracket was separated from the left main landing gear, causing the misalignment of the gear position sensors. This misalignment led to the "gear locked" position not being detected and the triggering of the corresponding warning in the cockpit.
The captain, who was the PM, retracted and extended the landing gear as a reflex, without referring to the procedure associated with the warning. As the warning was still present after recycling the landing gear, the crew aborted the approach and complied with the procedure. They flew a large left-hand circuit under radar vectors.
Six minutes after the go-around, the procedures associated with the fault had been completed. The captain took the role of PF.
The final approach and landing were uneventful. However, the "LANDING GEAR" warning remained active from the selection of the flap 5 configuration during the intermediate approach until after landing. The persistence of this warning is explained by an error during an action on the aural warning circuit breaker combined with the near impossibility of performing a visual cross-check of the position of the pulled circuit breakers.
Contributing factor
The following factor may have contributed to the rupture of the locking stay-left main landing gear assembly:
- the use of nuts, recommended by the manufacturer, which were not designed to bear the torque values indicated in the documentation.
Incident Facts
Date of incident
May 11, 2024
Classification
Incident
Cause
Unsafe gear
Airline
Hop!
Flight number
AF-4190
Departure
Paris Charles de Gaulle, France
Destination
Toulouse, France
Aircraft Registration
F-HBXI
Aircraft Type
Embraer ERJ-170
ICAO Type Designator
E170
This article is published under license from Avherald.com. © of text by Avherald.com.
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