Narrative:

Regarding ETOPS operations: due to the volcano in iceland converting a massive amount of heretofore useable airspace into; in essence; a no fly zone; it would seem incumbent to revisit and revise current ETOPS sops. A decompression scenario under current procedures could very well put the flight in jeopardy by flying direct to the ETOPS alternate. A revision that allows the crew to descend; then parallel the current route either forward or backward until a point where a direct route to the alternate could keep the flight outside of the ash contamination zone; is needed. Etp's would have to reflect this added time. This could also represent the potential to convert 138 ETOPS operations to 180 minute operations; or under worst case scenario; require the cancellation or delay of a flight.

Google
 

Original NASA ASRS Text

Title: An International Captain suggests modifying North Atlantic ETOPS operations so that potential enroute emergency diversions would have ETP's which avoid the volcanic ash no fly areas until a direct path to the diversion airport is reached.

Narrative: Regarding ETOPS operations: Due to the volcano in Iceland converting a massive amount of heretofore useable airspace into; in essence; a no fly zone; it would seem incumbent to revisit and revise current ETOPS SOPs. A decompression scenario under current procedures could very well put the flight in jeopardy by flying direct to the ETOPS alternate. A revision that allows the crew to descend; then parallel the current route either forward or backward until a point where a direct route to the alternate could keep the flight outside of the ash contamination zone; is needed. ETP's would have to reflect this added time. This could also represent the potential to convert 138 ETOPS Operations to 180 minute Operations; or under worst case scenario; require the cancellation or delay of a flight.

Data retrieved from NASA's ASRS site as of April 2012 and automatically converted to unabbreviated mixed upper/lowercase text. This report is for informational purposes with no guarantee of accuracy. See NASA's ASRS site for official report.