Here are some updates about Pakistan’s purchase of
T129 ATAK Helicopters which may or may not eventually be applicable also to the Philippines’ planned procurement of the same aircraft:
* The
United States (US) has not yet blocked the Export License for the
CTS-800 Engines (originally designed by an American company), but they haven’t approved it yet also up to now.
* One back up plan by Turkey should the US indeed block the CTS-800 license is for them to use their own
TS1400 Engines on the T129 Helicopter, but that project will only be completed by 2025.
* Another plan by Turkey is to use an Engine like the
Arrano 1A made by the French company
Safran which is covered by the US’
International Traffic in Arms Regulations (ITAR) Law and therefore won’t require an export license from them.
The Contract for the T129 for Pakistan was signed about a year and a half ago already, and despite the application for the Export License, the US has not come up with a decision up to now.
No timeline was given on the availability of the Arrano 1A engines though, but it seems to take a longer time also which is why Turkey is still hoping for the export approval of the CTS-800 engines.
The Arrano 1A is heavier and less powerful than the CTS-800 though, weighing 175 kg and with a maximum power output of only 851 kW versus the 143 kg and 1,166 kW of the CTS-800. So using it will reduce some of the performance characteristics of the T129.
SOURCE: Update (2019): Pakistan's T129 ATAK Attack Helicopter Purchase