LEARJET ACFT DAMAGED WHILE TRAINING IN PROGRESS. ACFT FLOWN BACK TO HOME BASE; DAMAGED; IN A PART 135 OP.

Narrative

I WAS SITTING IN THE BACK OF THE ACFT WHILE OUR TRAINING/CHK AIRMAN CAPT WAS IN L SEAT OF LEARJET WITH A NEW COPLT IN R SEAT. THEY WERE CHKING OUT THE NEW GUY -- VFR LNDG AFTER A PRACTICE ILS. THE COPLT WAS FLYING -- ON FINAL THE ACFT BEGAN TO DUTCH ROLL. IT BECAME SEVERE AND BY THE TIME THE CAPT RECOVERED WE HAD STRUCK BOTH TIP TANKS ON THE RWY. ACFT WAS SLIGHTLY DAMAGED; SO THE CAPT MADE THE DECISION IT WAS FLYABLE AND WE TOOK THE ACFT HOME TO YIP TO CHANGE ACFT AND CREW. ON THIS LEG I ACTED AS COPLT IN THE R SEAT; NOT REALIZING THE SEVERITY OF OUR ACTIONS BY FLYING THE ACFT UNDER PART 135 AFTER THE INCIDENT. SUPPLEMENTAL INFO FROM ACN 309225: WE WERE SET UP FOR NORMAL LNDG SLIGHTLY TO THE R OF CTRLINE AND REF PLUS 10. FO INITIATED A FLARE AT APPROX 6 FT AGL; THEN IMMEDIATELY SAID 'I HAVE THE AIRPLANE' BUT I HAD TO THEN SAY 'LET GO OF THE CTLS' BEFORE I WAS ABLE TO INITIATE R ROLL CORRECTIVE ACTION. WE TOUCHED DOWN IN A L WING LOW ATTITUDE THEN ROLLED TO A R WING LOW ATTITUDE AT WHICH TIME I ROLLED THE WINGS LEVEL AND INITIATED A GAR. I THEN BROUGHT THE ACFT AROUND TO A NORMAL LNDG. AFTER EXITING THE ACFT; WE DISCOVERED THAT WE HAD SCRAPED BOTH TIP TANKS. I CALLED DISPATCH AND ADVISED THEM OF THE INCIDENT. DISPATCH ASKED IF I WAS ABLE TO BRING THE ACFT BACK TO YIP AND I FELT THE DAMAGE WAS NOT SEVERE AND THE ACFT WAS STRUCTURALLY SOUND; SO I AGREED TO REPOSITION THE ACFT HOME. THE FREIGHT ARRIVED AND WE DEPARTED PTK FOR YIP ON A TWR ENRTE. THE REMAINDER OF THE FLT WAS UNEVENTFUL. I HAVE BEEN FLYING LEARS FOR ABOUT 10 YRS NOW AND HAVE HAD OCCASIONS IN THE PAST WHERE A COPLT HAS STARTED TO DROP THE WING IN THE FLARE. EACH TIME I HAVE BEEN ABLE TO CORRECT THIS ERROR. IN THIS CASE; HOWEVER; I WAS UNABLE TO CORRECT THIS WING LOW CONDITION IN SUFFICIENT TIME TO AVOID THIS INCIDENT. CALLBACK CONVERSATION WITH RPTR ACN 309225 REVEALED THE FOLLOWING INFO: THE RPTR IS AN INSTRUCTOR PLT FOR A FAR PART 135 FREIGHT ACR. HIS TRNEE WAS A LOW TIME PLT WITH NO PREVIOUS JET EXPERIENCE. THE ACFT ROLLED 30 DEGS OR MORE SIDE-TO-SIDE WITH THE MAIN GEAR ON THE RWY; SCRAPING THE BOTTOM OF THE TANKS AND BENDING UP THE TIPTANK WINGLETS. THE TANK PAINT WAS TOUCHED UP AND THE WINGLETS WERE REPLACED. THE TRNEE FROZE ON THE CTLS MAKING IT DIFFICULT FOR THE RPTR TO TAKE CTL OF THE ACFT. THE FAA AWARDED THE RPTR A LETTER IN HIS FILE FOR 2 YRS AND HE HAD TO TAKE HIS RECURRENT SIMULATOR TRAINING EARLY. THE ISSUE WAS FLYING THE ACFT FAR PART 135 WITH FREIGHT ABOARD WITHOUT AN INSPECTION.