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| Date: | Tuesday 30 March 2021 |
| Time: | 16:05:07 |
| Type: |  Boeing 737-71B (WL) |
| Owner/operator: | China Southern Airlines |
| Registration: | B-5291 |
| MSN: | 38962/4103 |
| Year of manufacture: | 2012 |
| Engine model: | CFMI CFM56-7B |
| Fatalities: | Fatalities: 0 / Occupants: |
| Other fatalities: | 0 |
| Aircraft damage: | Minor |
| Category: | Serious incident |
| Location: | Kashi (Kashgar) Laining International Airport (KHG/ZWSH) -
 China
|
| Phase: | Landing |
| Nature: | Passenger - Scheduled |
| Departure airport: | Ürümqi-Diwopu Airport (URC/ZWWW) |
| Kashi Airport (KHG/ZWSH) | |
| Investigating agency: | CAAC |
| Confidence Rating: |  Accident investigation report completed and information captured |
Flight CZ6886 from Wulumuqi(Urumqi) to Kashi(Kashgar) was scheduled to land at ZWSH at 1605. At 1600 local time, the aircraft reached 6900ft and established ILS approach to RWY26 of Kashi airport. Tower reported no wind on ground. METAR info: METAR ZWSH 300800Z 22003MPS 160V260 CAVOK 16/M17 Q1013 NOSIG.
When lining up with the runway, the aircraft encountered a sidewind from the right of 10kts. The crew banked 3.69 degrees to the left. Below 10 feet, the wind changed from 12kts at 042deg to 35kts at 162deg, and sidewind changed to 34kts from the left. The aircraft banked to the left at 9deg. The crew levelled out and decided to go around, and the gears touched the runway once (at 160505, overload 1.492G).
After the second touchdown, the wind changed again to 1kts at 100deg, and sidewind reduced to zero. The crew had difficulties in controlling the aircraft. At 5ft, a "BANK ANGLE" alarm went off, and the peak bank angle was 20.92deg to the left. The left wingtip scraped the runway and caused some damage.
After the event, the aircraft went around and landed normally at 1620 local time. The slats and winglets suffered damage of various degree.
The CAAC concluded that the crew handled the situation correctly and had standard CRM. The main cause was that the aircraft encountered low-altitude severe windshear and the windshear detecting system did not activate when encountering sideway windshear.
Accident investigation:
 |
|
Sources:
CAAC
XJXJ_AIR_2021_01 (CAAC)
https://safety.caac.gov.cn/indexnewsdetail/init.act?args=5fd04062453b45899045374e39744ec8
Location
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 24-Jul-2024 09:35 | PWu_A350 | Added |
| 24-Jul-2024 09:37 | ASN | Updated [Aircraft type, Cn, Location, Accident report, ] |
| 24-Jul-2024 09:38 | ASN | Updated [Accident report, ] |
| 15-Aug-2024 12:39 | ASN | Updated |
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