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C172 simulated IFR with safety pilot. Cleared to climb 3000 ft on 230 degree heading. At 2500 ft engine became very rough. Checked all system and elected to return to bed. Departure control vectored 050 degrees toward airport. Difficulty finding airport in all lights. Engine ran smoother when leaned. Landing ok, checking for problem.
| Attributes | |
| ACN | 352055 |
| Time | |
| Date | 199611 |
| Day | Wed |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | airport : bed |
| State Reference | MA |
| Altitude | msl bound lower : 2000 msl bound upper : 2500 |
| Environment | |
| Flight Conditions | VMC |
| Light | Night |
| Aircraft 1 | |
| Controlling Facilities | tracon : bos |
| Operator | general aviation : personal |
| Make Model Name | Skyhawk 172/Cutlass 172 |
| Operating Under FAR Part | Part 91 |
| Flight Phase | climbout : intermediate altitude |
| Route In Use | departure sid : sid |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | Other |
| Function | flight crew : single pilot |
| Qualification | pilot : commercial pilot : instrument |
| Experience | flight time last 90 days : 40 flight time total : 500 flight time type : 200 |
| ASRS Report | 352055 |
| Person 2 | |
| Affiliation | Other |
| Function | observation : observer |
| Qualification | pilot : private |
| Events | |
| Anomaly | aircraft equipment problem : less severe |
| Independent Detector | other flight crewa |
| Resolutory Action | flight crew : overcame equipment problem flight crew : declared emergency other |
| Consequence | Other |
| Supplementary | |
| Primary Problem | Aircraft |
Narrative:
On hanscom 6 to drunk, given 230 degrees, 2000 ft (simulated IFR with safety pilot), leveled at 2000 ft. Given to bos departure, given 3000 ft and started climb. At 2500 ft, engine started running very rough and missing. Checked primer, ignition, added carburetor heat. Quickly decided to return to bed. Indicated situation to bos departure. Bos departure response seemed slow, so I start 180 degree turn and informed bos departure. Bos departure gave vector to bed (50 degrees). Leaning seemed to improve engine. Maintained 2000 ft to allow glide if engine quit. Had some trouble locating bed in all the lights. This is not uncommon from this direction. Once bed and runway 5 idented, descended and made a nice landing. Trying to find what caused problem. I may have done something incorrect but all went well.
Original NASA ASRS Text
Title: C172 SIMULATED IFR WITH SAFETY PLT. CLRED TO CLB 3000 FT ON 230 DEG HDG. AT 2500 FT ENG BECAME VERY ROUGH. CHKED ALL SYS AND ELECTED TO RETURN TO BED. DEP CTL VECTORED 050 DEGS TOWARD ARPT. DIFFICULTY FINDING ARPT IN ALL LIGHTS. ENG RAN SMOOTHER WHEN LEANED. LNDG OK, CHKING FOR PROB.
Narrative: ON HANSCOM 6 TO DRUNK, GIVEN 230 DEGS, 2000 FT (SIMULATED IFR WITH SAFETY PLT), LEVELED AT 2000 FT. GIVEN TO BOS DEP, GIVEN 3000 FT AND STARTED CLB. AT 2500 FT, ENG STARTED RUNNING VERY ROUGH AND MISSING. CHKED PRIMER, IGNITION, ADDED CARB HEAT. QUICKLY DECIDED TO RETURN TO BED. INDICATED SIT TO BOS DEP. BOS DEP RESPONSE SEEMED SLOW, SO I START 180 DEG TURN AND INFORMED BOS DEP. BOS DEP GAVE VECTOR TO BED (50 DEGS). LEANING SEEMED TO IMPROVE ENG. MAINTAINED 2000 FT TO ALLOW GLIDE IF ENG QUIT. HAD SOME TROUBLE LOCATING BED IN ALL THE LIGHTS. THIS IS NOT UNCOMMON FROM THIS DIRECTION. ONCE BED AND RWY 5 IDENTED, DSNDED AND MADE A NICE LNDG. TRYING TO FIND WHAT CAUSED PROB. I MAY HAVE DONE SOMETHING INCORRECT BUT ALL WENT WELL.
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.