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An MD88 flight crew overshoots their assigned altitude on the missed approach from a visual to runway 1 at dca, dc.
| Attributes | |
| ACN | 469590 |
| Time | |
| Date | 200004 |
| Day | Sun |
| Local Time Of Day | 1801 To 2400 |
| Place | |
| Locale Reference | airport : dca.airport |
| State Reference | DC |
| Altitude | msl bound lower : 3000 msl bound upper : 3800 |
| Environment | |
| Flight Conditions | VMC |
| Weather Elements | Turbulence Windshear |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | tower : dca.tower |
| Operator | common carrier : air carrier |
| Make Model Name | MD-88 |
| Operating Under FAR Part | Part 121 |
| Flight Phase | descent : vacating altitude landing : missed approach |
| Route In Use | approach : visual |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : commercial pilot : instrument pilot : multi engine pilot : atp |
| Experience | flight time last 90 days : 180 |
| ASRS Report | 469590 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : multi engine pilot : instrument pilot : commercial pilot : atp |
| Experience | flight time last 90 days : 125 flight time type : 3000 |
| ASRS Report | 470044 |
| Events | |
| Anomaly | aircraft equipment problem : less severe altitude deviation : overshoot inflight encounter other non adherence : clearance other anomaly other |
| Independent Detector | aircraft equipment other aircraft equipment : altitude alert other flight crewa other flight crewb |
| Resolutory Action | flight crew : returned to assigned altitude |
| Consequence | Other |
| Supplementary | |
| Problem Areas | Environmental Factor Flight Crew Human Performance Weather Airspace Structure Aircraft Airport |
| Primary Problem | Weather |
| Air Traffic Incident | Pilot Deviation |
Narrative:
Conducting mount vernon visual to dca runway 1. Winds were 310 degrees at 32 KTS gusting to 41 KTS on short final. No missed approach procedure published, but set 328 degrees in heading and 3000 ft in flight guidance panel anyway. During go around, aircraft climbing in excess of 4000 FPM with toga power, hand flying trying to keep over the river to avoid P56 with strong westerly winds. At 400 ft AGL, called for heading select, called the miss, verified heading/altitude. Tower told us to intercept the dca 328 degree radial 3000 ft. At about 1500 ft, called for climb power, VNAV (flaps to remain at 15 degrees). VNAV moved the speed bug to 250 KTS. ATC gave us a 270 degree heading and first officer asked if I wanted 180 KTS. I said yes. I turned on the autoplt to decrease workload at about 2500 ft. VNAV was in VNAV capture mode. First officer pressed 'speed select' and dialed in 180 KTS. This deselected the altitude capture mode and put autoplt in vertical speed (+1500 FPM). At 3250 ft, altitude buzzer sounded. I disconnected autoplt and pushed over on the nose. Maximum altitude reached was 3380 ft. ATC did not mention any problem nor did we sense any conflict. (Departures usually assigned 5000 ft on this routing). Contributing factors: design of MD88 autoflt which requires non-derated climb power even in low altitude leveloffs. Also, design flaw in which a preselected altitude can be disarmed prior to leveloff. Supplemental information from acn 470044: highest altitude was just under 4000 ft MSL.
Original NASA ASRS Text
Title: AN MD88 FLC OVERSHOOTS THEIR ASSIGNED ALT ON THE MISSED APCH FROM A VISUAL TO RWY 1 AT DCA, DC.
Narrative: CONDUCTING MOUNT VERNON VISUAL TO DCA RWY 1. WINDS WERE 310 DEGS AT 32 KTS GUSTING TO 41 KTS ON SHORT FINAL. NO MISSED APCH PROC PUBLISHED, BUT SET 328 DEGS IN HDG AND 3000 FT IN FLT GUIDANCE PANEL ANYWAY. DURING GAR, ACFT CLBING IN EXCESS OF 4000 FPM WITH TOGA PWR, HAND FLYING TRYING TO KEEP OVER THE RIVER TO AVOID P56 WITH STRONG WESTERLY WINDS. AT 400 FT AGL, CALLED FOR HDG SELECT, CALLED THE MISS, VERIFIED HDG/ALT. TWR TOLD US TO INTERCEPT THE DCA 328 DEG RADIAL 3000 FT. AT ABOUT 1500 FT, CALLED FOR CLB PWR, VNAV (FLAPS TO REMAIN AT 15 DEGS). VNAV MOVED THE SPD BUG TO 250 KTS. ATC GAVE US A 270 DEG HDG AND FO ASKED IF I WANTED 180 KTS. I SAID YES. I TURNED ON THE AUTOPLT TO DECREASE WORKLOAD AT ABOUT 2500 FT. VNAV WAS IN VNAV CAPTURE MODE. FO PRESSED 'SPD SELECT' AND DIALED IN 180 KTS. THIS DESELECTED THE ALT CAPTURE MODE AND PUT AUTOPLT IN VERT SPD (+1500 FPM). AT 3250 FT, ALT BUZZER SOUNDED. I DISCONNECTED AUTOPLT AND PUSHED OVER ON THE NOSE. MAX ALT REACHED WAS 3380 FT. ATC DID NOT MENTION ANY PROB NOR DID WE SENSE ANY CONFLICT. (DEPS USUALLY ASSIGNED 5000 FT ON THIS ROUTING). CONTRIBUTING FACTORS: DESIGN OF MD88 AUTOFLT WHICH REQUIRES NON-DERATED CLB PWR EVEN IN LOW ALT LEVELOFFS. ALSO, DESIGN FLAW IN WHICH A PRESELECTED ALT CAN BE DISARMED PRIOR TO LEVELOFF. SUPPLEMENTAL INFO FROM ACN 470044: HIGHEST ALT WAS JUST UNDER 4000 FT MSL.
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.