Tj. Lyons et al., ASSESSMENT OF THE ANTI-G STRAINING MANEUVER (ACSM) SKILL PERFORMANCE AND REINFORCEMENT PROGRAM, Aviation, space, and environmental medicine, 68(4), 1997, pp. 322-324
Initial high-C centrifuge training of USAF fast jet pilots was institu
ted in 1985. Also, since the mid-1980's, pilot awareness of G-induced
loss of consciousness (G-LOC) has been enhanced by briefings, videotap
es, and safety articles. Aircraft accidents caused by an improperly pe
rformed anti-G straining maneuver (AGSM), however, continue to occur.
Deficiencies in the AGSM of pilots in flight have not been systematica
lly studied. A test program to reinforce the proper performance of the
AGSM in flight was initiated in the United States Air Forces Europe (
USAFE) in 1993. Head-up display videotapes (HUD tapes) were recorded d
uring flight and critiqued during debrief by flight leads for AGSM tec
hnique and continuity. Questionnaires were completed by F-16, F-15C, a
nd F-15E pilots assigned to USAFE: 78 surveys were completed out of 11
0 distributed (71%). There were 57 pilots (73%) who reported one or mo
re problems with their AGSM: 33 noted that the timing of their breathi
ng was too quick (<2 s cycle), 11 that their breathing was too slow (>
4 s), 9 that inhalation was too long, 18 occasionally did not ''get th
e jump on the Gs,'' and 34 frequently or occasionally talked during +G
z exposures. Of the 105 reported deficiencies, 67 (64%) were mostly or
completely corrected: 30/33 (91%) if the timing of breathing was too
quick, 8/11 (73%) if too slow, 5/9 (56%) if inhalation too long, 12/18
(67%) ''jump on the Gs,'' and 12/34 (35%) if they talked. This progra
m was most successful in remediating timing problems with the AGSM.