A CASA 212 FLIGHT CREW NOTED THEIR RIGHT ENGINE WAS NOT PRODUCING NORMAL POWER EVEN THOUGH ALL INDICATIONS WERE NORMAL.

Date: 2008-11 · Aircraft: Medium Transport; High Wing; 2 Turboprop Eng · Phase: takeoff

Anomalies: aircraft-equipment-problem-critical

Synopsis

A CASA 212 FLIGHT CREW NOTED THEIR RIGHT ENGINE WAS NOT PRODUCING NORMAL POWER EVEN THOUGH ALL INDICATIONS WERE NORMAL.

Narrative

WHILE ACTING AS THE FO ON A REPOSITION FLT FROM ZZZ TO ZZZ1; WE ENCOUNTERED AN UNUSUAL ENG INDICATION. AS THE CAPT PWRED UP AND WE BEGAN OUR TKOF ROLL; MY ATTN WAS FOCUSED ON KEEPING THE ACFT WINGS LEVEL AND DIRECTIONAL CONTROL (THE CASA IS UNIQUE IN MY EXPERIENCE WITH THE XFER OF CTLS AT 60 KIAS). AS WE WERE ACCELERATING; THE CAPT STATED THAT THE R ENG WAS NOT MAKING TARGET TORQUE. IMMEDIATELY AFTER THIS STATEMENT; I CALLED 'V1; ROTATE' AND LOOKED AT THE ENG INSTS. I NOTICED THAT THE R TORQUE INDICATION WAS AT 100% TORQUE AND STATED THIS TO THE CAPT. THE CAPT WAS CONCERNED THAT THE R ENG WAS POSSIBLY NOT PRODUCING FULL PWR. USUAL PRACTICE IS TO SET THE TORQUE FOR TKOF SLIGHTLY BELOW FULL RATED PWR; SO THAT THE RAM AIR RISE EFFECT DOES NOT OVER-TORQUE THE PROP AND ENG SYSTEMS. WE HAD PERFORMED ALL THE ENG RUN-UP AND SINGLE RED LINE COMPUTER TESTS ON THE ACFT; AS WELL AS A PROP OVERSPD GOVERNOR CHK. WE ALSO HAD PERFORMED A TORQUE AND TEMP LIMITER COMPUTER TEST. THE TORQUE AND TEMP LIMITER TEST DID NOT GIVE EXPECTED INDICATION; BUT ALL OTHER TESTS WERE WITHIN NORMAL LIMITS. WAS CALLED BY THE CAPT TODAY; WHO INFORMED ME THAT THE R ENG WAS RUN UP BY MECHS AT OUR HOME BASE AND THAT AS OF RIGHT THIS MOMENT IT WAS NOT PRODUCING FULL PWR. I AM SUBMITTING THIS RPT BECAUSE I BELIEVE THE ENG INSTRUMENTATION AND ENG RIGGING WAS SET IN A WAY THAT ALTHOUGH ALL TESTS WERE NORMAL; WE WERE FOOLED INTO BELIEVING THAT WE HAD FULL PWR WHEN WE ACTUALLY DID NOT. I BELIEVE THE PROPER WAY TO PROCEED TO AVOID THIS SITUATION WOULD BE TIGHTER MAINT CTL PROCS AND A MORE SAFETY-RELATED OUTLOOK BY OUR COMPANY TOWARDS MAINT WRITE-UPS.

Source: NASA Aviation Safety Reporting System (public domain). Reports are voluntary submissions and are not verified by NASA.