HKPA report number 110

Site: Ma On Shan

(***Click here for site guide***)

Date of Event: Monday 11th of December 2017

This Incident report was filed on Wednesday 13th of December 2017 and the last change to the report was made on Thursday 25th of January 2018 by Herman Chiu

Injury Index = 0
( 0 =No Injuries or Minor - brief visit to Doctor)
( 1 =Significant - hospitalized or work time loss less than 48 hours)
( 2 =Temporary Disabling Injuries)
( 3 =Permanent Partial Disabling Injuries)
( 4 =Permanent Total Disability)
( 5 =Fatal injuries)

Details:

A pilot holding a Unknown Licence with 2-3 years of experience whist flying at Ma On Shan at approximately 12-1400hrs on Monday 11th of December 2017.

The conditions at the time were reported to be Smooth with a NE wind blowing approximately 10-15kph. The temperature was 15-19deg C with Nil Cloud and Slight Haze Visibility.

There were reported to be 2-5 pilots at the site.

Factors in this Incident:
Tree Impact
Airmanship
Undershoot LZ
Rotor

Event Description:

Off field emergency landing due to short landing approach. On approach into Sha Kok Mei landing field, I was setup for the NW approach into the grass paddock at Sha Kok Mei village due to a northerly wind at landing. The winds at takeoff were NE at that time, but North at the landing field. During approach I had glided slightly further overhead Sha Kok Mei village, and did not correctly anticipate the reduction in glide due to headwind and also encountered sink from the N wind flow on the leeside of the hills to the north. It was become apparent that I would not make the landing field and would impact the houses if the approach continued. I discontinued the approach for the paddocked and elected to land in the construction field just prior to the river. a landing was made with a safe touchdown but due to the small size of the field the glider over shot and hung on the trees. No one was injured but we had to cut about 3 trees to rescue the glider. no damage to equipment. Additional information / contributing factors: -I was new to Tandem operations, who was familiarizing himself with his new equipment. to note, the passenger harness was used to store most of the packing equipment, which increased the size and volume, I found it slightly obstructing my view during flight. -Passenger was a fairly experienced P3 rated pilot -I had not flown in Ma On Shan for approximately 2 months Key Learning: -North wind conditions at MOS need to be familiarized before flight -a site with a larger landing field is more appropriate for familiarizing equipment, perhaps Long Kee -in the future, that construction field will no longer be an emergency landing option due to the rapid pace of construction

Committee Response: (if any )

Northerly condition in MOS is tricky. It's not advised to fly in moderate to strong northerly condition. It may not possible to reach landing zone due to down drift airflow on the north side of landing zone.

Committee Action: (if any )

NIL Action Yet

Attached Files: CLICK ON IMAGE TO SEE LARGER VERSION