AAIB November 2017
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AAIB November 2017
AW109SP Grand New, G-HLCM : Precautionary landing after a main rotor blade tip cap detached in flight, Private landing site near Clifton Dykes, Penrith, Cumbria, 2 August 2017.
As the helicopter approached the landing site it “shuddered” and the pilot felt a vibration through the cyclic control and airframe. He was able to control the helicopter’s attitude and elected to land in an adjacent field to avoid endangering persons on the ground.
After shutdown it was apparent that the tip cap of one of the main rotor blades was missing. The cap was not recovered.
Investigation by the manufacturer established that the tip cap had detached because of a surface preparation error that had reduced the strength of the bonded joint.
Safety actions
The manufacturer identified the main rotor blades that were potentially affected and issued Service Bulletin 109SP-116 to introduce a periodic inspection.
The EASA issued Emergency Airworthiness Directive 2017-0176-E to mandate the requirements of the Service Bulletin.
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Robinson R22 Beta, G-BPNI : Rolled after touchdown, West Calder, West Lothian, 26 June 2016.
The pilot stated that he was landing the helicopter at a private site, on a concrete landing pad surrounded by grass that sloped down to the right as he approached it. Having touched down with the left skid on the concrete and the right on the grass, the right skid became caught in the grass and the helicopter rolled over. It came to rest on its side and was extensively damaged; the pilot was uninjured.
As the helicopter approached the landing site it “shuddered” and the pilot felt a vibration through the cyclic control and airframe. He was able to control the helicopter’s attitude and elected to land in an adjacent field to avoid endangering persons on the ground.
After shutdown it was apparent that the tip cap of one of the main rotor blades was missing. The cap was not recovered.
Investigation by the manufacturer established that the tip cap had detached because of a surface preparation error that had reduced the strength of the bonded joint.
Safety actions
The manufacturer identified the main rotor blades that were potentially affected and issued Service Bulletin 109SP-116 to introduce a periodic inspection.
The EASA issued Emergency Airworthiness Directive 2017-0176-E to mandate the requirements of the Service Bulletin.
=========
Robinson R22 Beta, G-BPNI : Rolled after touchdown, West Calder, West Lothian, 26 June 2016.
The pilot stated that he was landing the helicopter at a private site, on a concrete landing pad surrounded by grass that sloped down to the right as he approached it. Having touched down with the left skid on the concrete and the right on the grass, the right skid became caught in the grass and the helicopter rolled over. It came to rest on its side and was extensively damaged; the pilot was uninjured.
I see the Robbo pilot landed on the wrong type of grass.
This is something all pilots train for in reputable schools, I would suggest. Long grass grown from inferior seeds is a major risk to helicopters - everyone learns this.
Teaching how to identify various strains:
tufts, weeds, course blade formations, direction of growth - it's all there in the HOGE/HIGE section (hovering inside grass effect etc). Honestly, some pilots.
This is something all pilots train for in reputable schools, I would suggest. Long grass grown from inferior seeds is a major risk to helicopters - everyone learns this.
Teaching how to identify various strains:
tufts, weeds, course blade formations, direction of growth - it's all there in the HOGE/HIGE section (hovering inside grass effect etc). Honestly, some pilots.
I see the Robbo pilot landed on the wrong type of grass.
This is something all pilots train for in reputable schools, I would suggest. Long grass grown from inferior seeds is a major risk to helicopters - everyone learns this.
Teaching how to identify various strains:
tufts, weeds, course blade formations, direction of growth - it's all there in the HOGE/HIGE section (hovering inside grass effect etc). Honestly, some pilots.
This is something all pilots train for in reputable schools, I would suggest. Long grass grown from inferior seeds is a major risk to helicopters - everyone learns this.
Teaching how to identify various strains:
tufts, weeds, course blade formations, direction of growth - it's all there in the HOGE/HIGE section (hovering inside grass effect etc). Honestly, some pilots.
