전 편대 가동률이 50% 정도인데 2014년 10월 이후로 큰 진전이 없는 것이며
전투 상황에 적합치 않은 거라 합니다.
또한, 부품 재설계 없인 치명적 고장들 사이 평균 비행시간을 맞출 수 없다네요.
한편, 저고도 고속 비행시 과도한 내부무장창 발열로 비행속도와 시간이
제한 되게 된다네요.
그리고. 탑재 기총 조준선이 오른쪽으로 많이 치우쳐 목표 조준이 안 되며
헬멧디스플레이 영상이 흔들리고 느리게 안정 된다네요.
Operational Suitability
The operational suitability of the F-35 fleet remains below requirements
and is dependent on work-arounds that would not meet Service expectations
in combat situations.
Overall fleet-wide monthly availability remail around 50 percent, a condition that
has existed with no significant improvement since October 2014.
The program is not likey to achieve the Mean Flight Hours between critical failures
threshold without redesigning aircraft components.
F-35A Flight Sciences
Excessive temperatures in the weapons bay at low altitudes while at high speeds
may result in speed and time restrictions when carrying internal weapons.
Gun testing
F-35A gun accuracy testing on AF-31 demonstrated uncharacterized bias toward
long and right of the target.
The gunsight display in the HMDS was cluttered and slow to stabilize.
http://www.dote.osd.mil/pub/reports/FY2017/pdf/dod/2017f35jsf.pdf