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Recommendation issued to: Jeppesen Sanderson

Recommendation details
Output No: R20070010
Date issued: 04 April 2007
Safety action status: Closed - Action Taken
Background: Why this Recommendation was developed

Output text

Safety Issue

Jeppesen instrument approach charts depicted coloured contours on the plan-view of approach charts based on the maximum height of terrain relative to the airfield only, rather than also considering terrain that increases the final approach or missed approach procedure gradient to be steeper than the optimum. Jeppesen instrument approach charts did not depict the terrain profile on the profile-view although the segment minimum safe altitudes were depicted.

Safety Recommendation

The Australian Transport Safety Bureau recommends that Jeppesen Sanderson Inc. address this safety issue.

Initial response
Date issued: 31 May 2007
Response from: Jeppesen Sanderson Inc.
Action status: Closed - Accepted
Response text:

Jeppesen Sanderson Inc. has informed the ATSB that it is revising all Jeppesen Lockhart River instrument approach charts as recommended to add contour lines in the plan-view diagrams. The charts will be issued in the June 15, 2007 revision. Jeppesen is also considering other possible chart enhancements to address this safety issue.

Further correspondence
Date issued: 20 June 2008
Response from: Jeppesen Sanderson Inc.
Response status: Closed - Accepted
Response text:

Jeppesen has revised the Lockhart River, Queensland RNAV (GNSS) Rwy 12, RNAV (GNSS) Rwy 30, and NDB Rwy 30 approach charts in June 2007 to add terrain contours in response to this Recommendation. Jeppesen also will revise chart specifications to show terrain contours on approach charts according ICAO Annex 4 criteria when the descent gradient (or computed VNAV angle) in the final approach segment of an instrument approach is steeper than normal.

 
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Last update 05 April 2012