ASN Wikibase Occurrence # 244806
This information is added by users of ASN. Neither ASN nor the Flight Safety Foundation are responsible for the completeness or correctness of this information.
If you feel this information is incomplete or incorrect, you can submit corrected information.
| Date: | Wednesday 21 October 2020 |
| Time: | 10:23 UTC |
| Type: |  Embraer ERJ-170LR |
| Owner/operator: | HOP! |
| Registration: | F-HBXK |
| MSN: | 17000008 |
| Fatalities: | Fatalities: 0 / Occupants: |
| Aircraft damage: | None |
| Category: | Serious incident |
| Location: | Paris-Charles de Gaulle Airport (CDG/LFPG) -
 France
|
| Phase: | Initial climb |
| Nature: | Passenger - Scheduled |
| Departure airport: | Brest-Guipavas Airport (BES/LFRB) |
| Paris-Charles de Gaulle Airport (CDG/LFPG) | |
| Investigating agency: | BEA |
| Confidence Rating: |  Accident investigation report completed and information captured |
Hop! flight AF7739, an Embraer ERJ-170 (F-HBXK) and Brussels Airlines flight SN3634, an Airbus A320 (OO-SNE), were involved in a near collision incident at Paris-Charles de Gaulle Airport, France.
The landing and take-off operations at Paris-Charles de Gaulle were taking place on the south parallel runways, in special; weather conditions, with a strong crosswind and moderate to severe turbulence below 1,500 ft.
The ERJ-170 was at 500 ft on short final on runway 26L when the crew of the A320 were cleared to take-off from runway 26R. At a height of 200 ft, a Windshear warning was triggered on board the ERJ-170. The crew applied the procedure associated with this warning by interrupting the approach and keeping the wings level. After eight seconds, when the ERJ-170 flew through 580 ft in climb, the Windshear warning stopped. The crew identified the end of the windshear situation when the aeroplane flew through 1,000 ft, 11 seconds after the end of the warning.
The crew continued complying with the procedure by keeping the wings level for a further eight seconds up to an altitude of 1,500 ft, in accordance with the operator's operational instructions for the ERJ-170. They then notified the controller of the windshear and the go-around.
Due to compliance with the Windshear procedure and the strong crosswind, the ERJ-170 deviated northwards and closed in on the A320 taking off from runway 26R.
The controller attempted to resolve the conflict by using the emergency phraseology to order the ERJ-170 to turn onto a heading of 240°, around 10 seconds after the ERJ-170 had reported the go-around. The crew read back the instruction but the controller's order to change the heading was not followed. In fact, complying with the TCAS procedure, the crew stopped the turn as they passed through a heading of 250° which resulted in a track of 263°. The crew of the ERJ-170 did not immediately inform the controller of the TCAS resolution advisory due to the frequency being busy.
The controller then asked the crew of the A320 to stop climbing without using the emergency phraseology. The latter replied that they were following a resolution advisory emitted by their TCAS.
The crew of the ERJ-170 then ambiguously informed the controller that they had also had a TCAS resolution advisory.
The crews followed the orders of the resolution advisory provided by their respective TCAS systems. The minimum separation reached during the incident was 0.09 NM (167 m) and 460 ft (140 m).
Neither of the crews informed the controller of the end of their respective TCAS resolution advisories using the standard message set out in the phraseology rules. The use of the past tense in the non-standard message made by the crew of the ERJ-170 stating that they had also had a TCAS may have led the controller to believe that the resolution advisory had ended. The controller therefore issued orders to the crews despite the ongoing resolution advisories.
Accident investigation:
 |
|
Sources:
https://bea.aero/en/investigation-reports/notified-events/detail/alerte-windshear-deviation-de-trajectoire-lors-de-lapproche-interrompue-rapprochement-anormal-avec-un-avion-au-decollage/
https://www.flightradar24.com/data/aircraft/f-hbxk#25d4a2bd
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 11-Nov-2020 18:14 | harro | Updated [Aircraft type, Registration, Cn, Operator, Phase, Departure airport, Destination airport, Source] |
| 02-Jun-2023 07:21 | harro | Updated [[Aircraft type, Registration, Cn, Operator, Phase, Departure airport, Destination airport, Source]] |
Corrections or additions? ... Edit this accident description
The Aviation Safety Network is an exclusive service provided by:
Quick Links:
| ASN Home | Send Correction / Feedback |
| FSF Home | Disclaimer | Copyright |
| Contact Us | Privacy Policy |
| Press / Media |
CONNECT WITH US:
©2024 Flight Safety Foundation