23 Agustus 2011
SH-2G Seasprite of the RNZN (photo : Claire Gow)
New Zealand is finding its five Kaman SH-2G Super Seasprite helicopters increasingly difficult to maintain, with the issue resulting in fewer flight hours than targeted.
"That target was itself reassessed during the year to 904h, in reflection of the difficulty being experienced in keeping enough helicopters available," the report said.
"Corrosion and vibration damage are the main maintenance issues on the Seasprite," said the ministry. "Regular operation of the Seasprite in a corrosive, salt-laden environment exacerbates maintenance issues.
New Zealand aims to have three Seasprites deployed on its Anzac-class frigates at any one time. This requires that four aircraft be operational, with the fourth required for training and certification.
In October 2010 just one Seasprite was available, with two helicopters undergoing heavy maintenance and two others awaiting heavy maintenance.
"Corrosion and vibration damage are the main maintenance issues on the Seasprite," said the ministry. "Regular operation of the Seasprite in a corrosive, salt-laden environment exacerbates maintenance issues.
"Good prevention and husbandry can slow, but not stop, the rate of airframe deterioration."
It added that "vibration damage is endemic to helicopters and worsens in line with hours flown rather than physical age. The only way to ameliorate is to lower flying hours, which is not a viable option if capability is to be maintained."
New Zealand has identified several other problems, including long lead times for spares and engineering support from manufacturer Kaman.
It also identified problems with New Zealand Defence Force training and processes.
The report makes a number of recommendations, most focused on addressing procedural and training shortcomings. It makes no mention of possibly replacing the aircraft.
The Super Seasprite entered service in New Zealand in 2001.
The Egyptian air force and Polish navy are the only other operators of the type, withFlightglobal's HeliCAS database recording them as having active fleets of 10 and three, respectively.
I think it's time for New Zealand to retire the Seasprite and either go with Eurocopter's NFH or go with a Seahawk like Australia. They know they can't get parts for Seasprites and i think it's time for them to upgrade.
BalasHapus