In all of the U.S. approach accidents both types of instrument approach-precision and non-precision-were involved. In a precision approach the pilot uses an ILS and Vertical (height) guidance from an electronic glidepath. The approach is flown to a predetermined Decision Height (DH). In a non-precision approach, no electronic glidepath is available. Azimuth information may be obtained from an ILS localiser, a radio beacon or a ground radar. Non-precision approaches are sometimes necessary at airfields where an electronic glideslope is either topographically or economically impracticable. The 17 approach accidents which happened over six years have been studied by the U.S. NTSB. The importance of distinguishing between the Pilot Flying (PF) and the Pilot Not Flying (PNF) as it relates to approach accidents is discussed. Airlines establish their own procedures as to who shall fly the aircraft on instruments and who shall monitor and watch for the lights. All procedures are designed to ensure that the PF is monitored and warned if the aircraft departs from its flightpath. Nearly all airlines encourage their captainsto "play" co-pilot in good weather. Such role swapping widens the experience of the co-pilot. Role swapping also develops the relationship between pilot and co-pilot so that the challenging of the former by the latter is accepted as normal. The captain-monitored approach is discussed and it is noted that this approach, by freeing the captain to attend more to the management than to the manual aspects of the operation, will in the future be bringing more and more airlines safely down to land.

  • Availability:
  • Corporate Authors:

    IPC Transport Press, Limited

    Dorset House, Stamford Street
    London SE1 9LU,   England 
  • Authors:
    • Ramsder, J M
  • Publication Date: 1978-7-15

Media Info

  • Pagination: p. 219-222
  • Serial:
    • Flight International
    • Volume: 114
    • Issue Number: 3617
    • Publisher: Reed Business Information, Limited
    • ISSN: 0015-3710

Subject/Index Terms

Filing Info

  • Accession Number: 00179393
  • Record Type: Publication
  • Source Agency: Flight International
  • Files: TRIS
  • Created Date: Oct 31 1978 12:00AM