Narrative:

While climbing in rain; passing 16;000 ft at 300+ KTS; experienced rollback on engine power. First the left engine; EPR and both tachometers dropped approximately 20%. I checked wiper nut; it had a bunch of ice. A few seconds later; right engine rolled back about the same amount. Ign was already in continuous because of heavy rain. No response to increased throttle. Turned on engine anti-ice. A few seconds later; both engines responded normally; RAT was +9C sat was -11C. Engines were normal from then on. Reported severe icing to ATC and dispatch. Noted information in the maintenance log book for engine inspection.

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Original NASA ASRS Text

Title: The RPM and EPR of both an MD80's engines rolled back at 16;000' in heavy rain at +9C. Engine functions returned to normal after the engine anti ice was turned on.

Narrative: While climbing in rain; passing 16;000 FT at 300+ KTS; experienced rollback on engine power. First the left engine; EPR and both tachometers dropped approximately 20%. I checked wiper nut; it had a bunch of ice. A few seconds later; right engine rolled back about the same amount. IGN was already in continuous because of heavy rain. No response to increased throttle. Turned on engine anti-ice. A few seconds later; both engines responded normally; RAT was +9C SAT was -11C. Engines were normal from then on. Reported severe icing to ATC and dispatch. Noted information in the Maintenance Log Book for engine inspection.

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.