AC 21-34, ADVISORY CIRCULAR, SHOULDER HARNESS - SAFETY BELT INSTALLATIONS (4 JUN 1993)

AC 21-34, ADVISORY CIRCULAR, SHOULDER HARNESS - SAFETY BELT INSTALLATIONS (4 JUN 1993)., This advisory circular (AC) provides information and guidance pertinent to an acceptable means, but not the only means, for installation of shoulder harness and safety belt restraint systems at all seat locations on all previously type certificated aircraft.