ASN Wikibase Occurrence # 233877
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: | Sunday 15 July 2018 |
| Time: | 03:01 LT |
| Type: |  Bombardier CSeries CS300 (A220-300) |
| Owner/operator: | Swiss International Air Lines |
| Registration: | HB-JCC |
| MSN: | 55012 |
| Year of manufacture: | 2017 |
| Fatalities: | Fatalities: 0 / Occupants: 46 |
| Aircraft damage: | None |
| Category: | Serious incident |
| Location: | Porto-Francisco Sá Carneiro Airport (OPO/LPPR) -
 Portugal
|
| Phase: | Take off |
| Nature: | Passenger - Scheduled |
| Departure airport: | Porto-Francisco Sá Carneiro Airport (OPO/LPPR) |
| Genève-Cointrin Airport (GVA/LSGG) | |
| Investigating agency: | STSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
Swiss International Air Lines flight LX2077 from Porto (LPPR) to Geneva (LSGG) was carried out using the Bombardier CSeries CS300 (A220-300)
HB-JCC. Two pilots, three cabin crew members and 41 passengers were on board.
After being given clearance by the control tower at 02:59 local time, HB-JCC taxied to runway 35, lining up from intersection C. In the process, the captain acting as the pilot flying (PF) armed the autothrottle (AT).
The flight crew performed a rolling takeoff. Once the aircraft was aligned to the runway axis, the PF advanced the thrust levers, assuming that the AT would now be engaged and would set the takeoff power to the required level. As the PF had advanced the thrust levers to a thrust lever angle (TLA) of only 20.6°, the AT remained armed without becoming engaged. This went unnoticed by the flight crew. For activation, a TLA of 23° would have been required.
After exceeding an indicated airspeed of 60 kt, the spoilers extended as they are designed to do; this was not indicated to the flight crew.
As per the standard operating procedures, one of the things that the flight crew must check is that the required takeoff power is set when exceeding a speed of 80 kt. Neither of the pilots could remember whether they had executed this check. The engine power being too low went
unnoticed.
Due to slow acceleration and the remaining length of the runway, the PF realised that the power had been set too low. By then, the aircraft had reached a speed of between 90 and 100 kt. He pushed the throttles forward and, when the TLA passed 23°, the spoilers retracted as they are designed to do. In addition, the warning CONFIG SPOILER was displayed in red letters.
The aircraft took off approximately 1000 metres before the end of the runway, at a distance that was 1.5 times the length of the calculated takeoff distance, continued to climb and landed in Geneva without any further incident.
Causes:
The serious incident, in which a commercial aircraft took off with insufficient engine power, can be attributed to the fact that the flight crew was too late to notice that the engine power required for takeoff was not set.
The following factors contributed to the serious incident:
- Non-compliance with the aviation company’s standard operating procedures (SOP);
- Inappropriate prioritisation by the flight crew during the takeoff roll.
Although they did not influence the development and course of the serious incident, the following risk factors were identified during the investigation:
- The design of the spoiler deployment;
- The design of the autothrottle (AT), whereby the AT switches to HOLD mode during the takeoff roll, even if the required takeoff power (target N1) has not yet been reached.
Accident investigation:
 |
|
Sources:
STSB
History of this aircraft
Other occurrences involving this aircraft
| 15 October 2019 | HB-JCC | Swiss International Air Lines | 0 | near Mons, Hainaut |  |
min |
| Engine failure | ||||||
Images:
Figure: STSB
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 11-Mar-2020 13:26 | harro | Added |
| 11-Mar-2020 21:00 | harro | Updated [Photo, Accident report, ] |
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