Narrative:

The aircraft (a C152) developed several problems. The mode C transponder could not squawk certain codes and the #2 radio and VOR identify inoperative shortly after departure from ane. During a stop in brd, we heard what sounded like a 'hissing' sound from the instrument panel. For most of the flight between brd and ane the gyroscopes performed well up until 20 NM from the gep VOR. After descending to 3000 ft MSL for the VOR approach into ane, the directional gyroscope became useless, turbulence became moderate and we still remained in IMC. We found a great difficulty in maintaining directional control because of the turbulence interfering with the turn coordinator and the magnetic compass. ATC assisted us by giving us no- gyroscope turns but were unable to judge if we were keeping the proper heading. At one point in the approach we made visual contact with the ground and chose to stay below the overcast instead of a climb and join the VOR approach radial leading to ane. The radio in the aircraft was weak and ATC did not hear our xmissions clearly, we then found the field and landed safely.

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Original NASA ASRS Text

Title: DURING A INST TRAINING FLT IN A C152, THE CODE C XPONDER WAS UNUSABLE ON SEVERAL CODES, THE #2 VOR IDENT WOULD NOT WORK AND THE DIRECTIONAL GYROSCOPE BECAME INOP CAUSING THE INSTRUCTOR TO ASK FOR A NO GYROSCOPE APCH! ATC PROVIDED A FLT ASSIST TO A SUCCESSFUL LNDG.

Narrative: THE ACFT (A C152) DEVELOPED SEVERAL PROBS. THE MODE C XPONDER COULD NOT SQUAWK CERTAIN CODES AND THE #2 RADIO AND VOR IDENT INOP SHORTLY AFTER DEP FROM ANE. DURING A STOP IN BRD, WE HEARD WHAT SOUNDED LIKE A 'HISSING' SOUND FROM THE INST PANEL. FOR MOST OF THE FLT BTWN BRD AND ANE THE GYROSCOPES PERFORMED WELL UP UNTIL 20 NM FROM THE GEP VOR. AFTER DSNDING TO 3000 FT MSL FOR THE VOR APCH INTO ANE, THE DIRECTIONAL GYROSCOPE BECAME USELESS, TURB BECAME MODERATE AND WE STILL REMAINED IN IMC. WE FOUND A GREAT DIFFICULTY IN MAINTAINING DIRECTIONAL CTL BECAUSE OF THE TURB INTERFERING WITH THE TURN COORDINATOR AND THE MAGNETIC COMPASS. ATC ASSISTED US BY GIVING US NO- GYROSCOPE TURNS BUT WERE UNABLE TO JUDGE IF WE WERE KEEPING THE PROPER HEADING. AT ONE POINT IN THE APCH WE MADE VISUAL CONTACT WITH THE GND AND CHOSE TO STAY BELOW THE OVCST INSTEAD OF A CLB AND JOIN THE VOR APCH RADIAL LEADING TO ANE. THE RADIO IN THE ACFT WAS WEAK AND ATC DID NOT HEAR OUR XMISSIONS CLRLY, WE THEN FOUND THE FIELD AND LANDED SAFELY.

Data retrieved from NASA's ASRS site as of July 2007 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.