Indian Airlines Flight 503
... that poor aircraft maintenance practices contributed to the crash of Indian Airlines Flight 503?
... that poor <a href="./Aircraft_maintenance" id="mwAqA" rel="mw:WikiLink" title="Aircraft maintenance">aircraft maintenance</a> practices contributed to the crash of <b id="mwAqE"><a href="./Indian_Airlines_Flight_503" id="mwAqI" rel="mw:WikiLink" title="Indian Airlines Flight 503">Indian Airlines Flight<span id="mwAqM" typeof="mw:Entity"> </span>503</a></b>?