Narrative:

Attempted below GS approach to runway 8 at bur. Approaching bur area, aircraft was in almost continuous moderate turbulence and heavy rain from pmd inbound. Heading sbound prior to ILS 8 intercept we were given several lower altitudes and slowdown calls from approach. Approaching silex we were cleared to 3500 ft, told to slow to 160 KTS and turned onto final approach to runway 8. We were then cleared for approach to intercept final at 3000 ft or above. I armed the ILS and got confirmation on silex and continued to descend (we were above 3500 ft at silex). At that point, the copilot set 4000 ft in the altitude alert window for go around instead of 3000 ft until intercept of GS. I did not notice or did not recognize the mistake. We apparently went through 3000 ft prior to budde. I remember calling out budde at 1700 ft AGL. At that time I failed to look back at the chart to check the proper altitude even though we briefed the proper altitude at budde -- 2027 ft AGL. The WX was 400 and 2 with rain. At about 1200 ft AGL, approach control gave us a climb to 5000 ft and a turn to the left. We complied and completed a second approach with no problem. Even though a mistake was made in setting the altitude alert, I missed several clues to the mistake. One reason for sure was that the aircraft was rocking and rolling and just watching that we were heading and going in the proper direction was a full time job. Wind currents were pushing the aircraft up and down regardless of some of the autoplt inputs.

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Original NASA ASRS Text

Title: ALTDEV DURING IAP ILS APCH.

Narrative: ATTEMPTED BELOW GS APCH TO RWY 8 AT BUR. APCHING BUR AREA, ACFT WAS IN ALMOST CONTINUOUS MODERATE TURB AND HVY RAIN FROM PMD INBOUND. HDG SBOUND PRIOR TO ILS 8 INTERCEPT WE WERE GIVEN SEVERAL LOWER ALTS AND SLOWDOWN CALLS FROM APCH. APCHING SILEX WE WERE CLRED TO 3500 FT, TOLD TO SLOW TO 160 KTS AND TURNED ONTO FINAL APCH TO RWY 8. WE WERE THEN CLRED FOR APCH TO INTERCEPT FINAL AT 3000 FT OR ABOVE. I ARMED THE ILS AND GOT CONFIRMATION ON SILEX AND CONTINUED TO DSND (WE WERE ABOVE 3500 FT AT SILEX). AT THAT POINT, THE COPLT SET 4000 FT IN THE ALT ALERT WINDOW FOR GAR INSTEAD OF 3000 FT UNTIL INTERCEPT OF GS. I DID NOT NOTICE OR DID NOT RECOGNIZE THE MISTAKE. WE APPARENTLY WENT THROUGH 3000 FT PRIOR TO BUDDE. I REMEMBER CALLING OUT BUDDE AT 1700 FT AGL. AT THAT TIME I FAILED TO LOOK BACK AT THE CHART TO CHK THE PROPER ALT EVEN THOUGH WE BRIEFED THE PROPER ALT AT BUDDE -- 2027 FT AGL. THE WX WAS 400 AND 2 WITH RAIN. AT ABOUT 1200 FT AGL, APCH CTL GAVE US A CLB TO 5000 FT AND A TURN TO THE L. WE COMPLIED AND COMPLETED A SECOND APCH WITH NO PROB. EVEN THOUGH A MISTAKE WAS MADE IN SETTING THE ALT ALERT, I MISSED SEVERAL CLUES TO THE MISTAKE. ONE REASON FOR SURE WAS THAT THE ACFT WAS ROCKING AND ROLLING AND JUST WATCHING THAT WE WERE HDG AND GOING IN THE PROPER DIRECTION WAS A FULL TIME JOB. WIND CURRENTS WERE PUSHING THE ACFT UP AND DOWN REGARDLESS OF SOME OF THE AUTOPLT INPUTS.

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.