The Safety Board's full report is available at http://www.ntsb.gov/publictn/A_Acc1.htm. The Aircraft Accident Report number is NTSB/AAR-08-02. On April 12, 2007, about 0043 eastern daylight time, a Bombardier/Canadair Regional Jet (CRJ) CL600-2B19, N8905F, operated as Pinnacle Airlines flight 4712, ran off the departure end of runway 28 after landing at Cherry Capital Airport (TVC), Traverse City, Michigan. There were no injuries among the 49 passengers (including 3 lap-held infants) and 3 crewmembers, and the aircraft was substantially damaged. Weather was reported as snowing. The airplane was being operated under the provisions of 14 Code of Federal Regulations (CFR) Part 121 and had departed from Minneapolis-St. Paul International (Wold-Chamberlain) Airport (MSP), Minneapolis, Minnesota, about 2153 central daylight time (CDT). Instrument meteorological conditions prevailed at the time of the accident flight, which operated on an instrument flight rules (IFR) flight plan.
The pilots' decision to land at Cherry Capital Airport (TVC), Traverse City, Michigan, without performing a landing distance assessment, which was required by company policy because of runway contamination initially reported by TVC ground operations personnel and continuing reports of deteriorating weather and runway conditions during the approach. This poor decision-making likely reflected the effects of fatigue produced by a long, demanding duty day and, for the captain, the duties associated with check airman functions. Contributing to the accident were 1) the Federal Aviation Administration pilot flight and duty time regulations that permitted the pilots' long, demanding duty day and 2) the TVC operations supervisor's use of ambiguous and unspecific radio phraseology in providing runway braking information. The Safety Board's full report is available at http://www.ntsb.gov/publictn/A_Acc1.htm. The Aircraft Accident Report number is NTSB/AAR-08-02.
— 10,205 samples, 81 parameters, 04:43:29.7 to 04:46:05.7.
| Parameter | Max | at | Min | at | Final | at |
|---|---|---|---|---|---|---|
| Vertical acceleration g | 1.4 | 04:45:48.7 | 0.3 | 04:45:47.9 | 1.0 | 04:46:05.6 |
| Engine 1 N1 %RPM | 80.1 | 04:45:38.8 | 8.6 | 04:46:04.8 | 8.6 | 04:46:04.8 |
| Engine 2 N1 %RPM | 74.1 | 04:45:38.3 | 8.8 | 04:46:05.3 | 8.8 | 04:46:05.3 |
| Time | Event | Page |
|---|---|---|
| 04:41:15-04:43:50 GMT (revised) | Plots 1, 3 and 5 re-issued on the revised 155-second time scale covering the approach and landing | 1 |
| 04:43:00-04:43:37 GMT (revised) | Plots 2, 4 and 6 re-issued on the revised 37-second scale around touchdown and the overrun | 1 |
1208 transcribed utterances from 03:31:54.1 to 04:55:43.7, 24 sources. Final entries:
| 04:55:20.6 | CAM-? | *** still got five thousand pounds of fuel on (on board). |
| 04:55:25.5 | CAM-1 | okay, alright. |
| 04:55:28.0 | CAM-? | * want me to power down * * *? |
| 04:55:31.9 | CAM | [sound similar to clanking]. |
| 04:55:43.7 | CAM | [sound of single chime]. End of Transcript |
Docket: data.ntsb.gov/Docket/?NTSBNumber=DCA07FA037. This brief is an analytical aid assembled from public records; it is not an investigative finding.