Narrative:

Upon being cleared for the yardley 2 arrival (patuxent transition) was told by ZDC, upon crossing patuxent VOR to cross louie intersection at and maintain 13000 ft MSL. Cruising altitude was FL190 upon receiving crossing restr at pxt VOR for louie (20 NM from pxt VOR). Initiated 1500 FPM rate of descent to cross louie at 13000 ft. Upon passing 14400 ft, experienced light to moderate turbulence and immediately started slowing to maneuvering speed. Rate of descent slowed to 500 FPM, winds were 240 degrees/15 KTS at 14000 ft (tailwind). Cruised louie at 13800 ft MSL and contacted baltimore approach (handoff). Turbulence continued as light to occasional moderate along arrival corridor. Descent rate was 100-200 FPM due to turbulence and maneuvering speed. Approximately 10 mi past louie intersection on the arrival, baltimore approach called to ask us what altitude we had been cleared to, we replied 13000 ft. He then asked us our altitude and we responded 13200 ft. He then said he showed us at 14000 ft and said the previous controller had given us the clearance to cross louie at 13000 ft. We acknowledged this and reported that our transponder(south) had been reading high/low as much as 1000 ft in the past 2 days. The controller acknowledged our transmission and handed us off to ZNY and we continued the rest of the flight uneventfully. Note: on the return flight from teb-avl, ATC informed us he had lost radar contact with us on the climb out. We recycled the transponder and it worked uneventfully for the remainder of the flight. Both xponders have been written up on our squawk sheet to be repaired as soon as possible!

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Original NASA ASRS Text

Title: PLT OF AN SMT TURBOPROP FAILED TO DSND IN TIME TO MAKE A XING RESTR DUE TO DISTR AND INFLT TURB.

Narrative: UPON BEING CLRED FOR THE YARDLEY 2 ARR (PATUXENT TRANSITION) WAS TOLD BY ZDC, UPON XING PATUXENT VOR TO CROSS LOUIE INTXN AT AND MAINTAIN 13000 FT MSL. CRUISING ALT WAS FL190 UPON RECEIVING XING RESTR AT PXT VOR FOR LOUIE (20 NM FROM PXT VOR). INITIATED 1500 FPM RATE OF DSCNT TO CROSS LOUIE AT 13000 FT. UPON PASSING 14400 FT, EXPERIENCED LIGHT TO MODERATE TURB AND IMMEDIATELY STARTED SLOWING TO MANEUVERING SPD. RATE OF DSCNT SLOWED TO 500 FPM, WINDS WERE 240 DEGS/15 KTS AT 14000 FT (TAILWIND). CRUISED LOUIE AT 13800 FT MSL AND CONTACTED BALTIMORE APCH (HDOF). TURB CONTINUED AS LIGHT TO OCCASIONAL MODERATE ALONG ARR CORRIDOR. DSCNT RATE WAS 100-200 FPM DUE TO TURB AND MANEUVERING SPD. APPROX 10 MI PAST LOUIE INTXN ON THE ARR, BALTIMORE APCH CALLED TO ASK US WHAT ALT WE HAD BEEN CLRED TO, WE REPLIED 13000 FT. HE THEN ASKED US OUR ALT AND WE RESPONDED 13200 FT. HE THEN SAID HE SHOWED US AT 14000 FT AND SAID THE PREVIOUS CTLR HAD GIVEN US THE CLRNC TO CROSS LOUIE AT 13000 FT. WE ACKNOWLEDGED THIS AND RPTED THAT OUR XPONDER(S) HAD BEEN READING HIGH/LOW AS MUCH AS 1000 FT IN THE PAST 2 DAYS. THE CTLR ACKNOWLEDGED OUR XMISSION AND HANDED US OFF TO ZNY AND WE CONTINUED THE REST OF THE FLT UNEVENTFULLY. NOTE: ON THE RETURN FLT FROM TEB-AVL, ATC INFORMED US HE HAD LOST RADAR CONTACT WITH US ON THE CLBOUT. WE RECYCLED THE XPONDER AND IT WORKED UNEVENTFULLY FOR THE REMAINDER OF THE FLT. BOTH XPONDERS HAVE BEEN WRITTEN UP ON OUR SQUAWK SHEET TO BE REPAIRED ASAP!

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.