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Sticking altimeter on GA small aircraft discovered after takeoff and operating in bwi arsa. Postflt inspection revealed the aircraft certification was 4 months overdue.
| Attributes | |
| ACN | 128770 |
| Time | |
| Date | 198911 |
| Day | Sat |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | airport : bwi |
| State Reference | MD |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | tracon : bwi |
| Operator | general aviation : personal |
| Make Model Name | Small Aircraft, Low Wing, 1 Eng, Fixed Gear |
| Flight Phase | climbout : intermediate altitude cruise other |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | Other |
| Function | flight crew : single pilot |
| Qualification | pilot : cfi pilot : commercial pilot : instrument |
| Experience | flight time last 90 days : 20 flight time total : 1250 flight time type : 500 |
| ASRS Report | 128779 |
| Person 2 | |
| Affiliation | government : faa |
| Function | controller : approach |
| Qualification | controller : radar |
| Events | |
| Anomaly | aircraft equipment problem : less severe altitude deviation : overshoot non adherence : far |
| Independent Detector | other controllera |
| Resolutory Action | none taken : anomaly accepted none taken : unable |
| Consequence | Other |
| Supplementary | |
| Primary Problem | Aircraft |
| Air Traffic Incident | other |
Narrative:
Altimeter 'jumped' once or twice on climb. ATC inquired as to altitude. Mode C indicated 300' low. Altimeter showed 150' low. After flight level altimeter checked by licensed facility which found it to be sticking. Altimeter was replaced. Also discovered that log book showed inspection to have lapsed 4 months prior. Don't know if the inspection would have cured,but wouldn't think 150' low using it hurt.
Original NASA ASRS Text
Title: STICKING ALTIMETER ON GA SMA DISCOVERED AFTER TKOF AND OPERATING IN BWI ARSA. POSTFLT INSPECTION REVEALED THE ACFT CERTIFICATION WAS 4 MONTHS OVERDUE.
Narrative: ALTIMETER 'JUMPED' ONCE OR TWICE ON CLB. ATC INQUIRED AS TO ALT. MODE C INDICATED 300' LOW. ALTIMETER SHOWED 150' LOW. AFTER FLT LEVEL ALTIMETER CHKED BY LICENSED FAC WHICH FOUND IT TO BE STICKING. ALTIMETER WAS REPLACED. ALSO DISCOVERED THAT LOG BOOK SHOWED INSPECTION TO HAVE LAPSED 4 MONTHS PRIOR. DON'T KNOW IF THE INSPECTION WOULD HAVE CURED,BUT WOULDN'T THINK 150' LOW USING IT HURT.
Data retrieved from NASA's ASRS site as of August 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.