# NTSB DEN82DA169: Quicksilver Mxii, N3149Z, Broomfield, CO, August 20, 1982

- Type: NTSB accident investigation
- Classification: Accident · Serious injuries · Final report
- Date: August 20, 1982, 14:10 local (21:10 UTC)
- Place: Broomfield, CO
- Coordinates: 39.939151, -105.059638 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=39.9392&lon=-105.0596&mi=10
- Phase of flight: [Takeoff](https://openairdocs.org/ntsb-phases/300) (OpenAirDocs' grouping)
- Highest injury: Serious injuries
- Injuries: 1 serious, 1 uninjured
- Status: Completed, report August 20, 1983
- Report: Approved by Office Director
- NTSB case key (mKey): 70049
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=DEN82DA169
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/70049/pdf
- Page: https://openairdocs.org/ntsb/DEN82DA169

## Sequence of events

In NTSB's coding before 2008 (https://www.ntsb.gov/GILS/Documents/codman.pdf).

- In flight collision with object, takeoff
  - weather condition - high density altitude (contributing factor)
  - preflight planning/preparation - inadequate, pilot in command (cause)
  - aircraft weight and balance - exceeded, pilot in command (cause)
  - all available runway - not used, pilot in command
  - airspeed - not maintained, pilot in command (cause)
  - stall/mush - inadvertent, pilot in command
  - object - approach light/navaid (contributing factor)
  - maneuver - delayed, pilot in command (cause)
- In flight collision with object, takeoff
  - object (contributing factor)

## Analysis

REPORTEDLY, THE PILOT MADE AN INTERSECTION TAKEOFF FROM ABOUT MIDFIELD ON RUNWAY 02. HE STATED THAT HE TOOK OFF AT ROTATION SPEED PLUS 2 KTS. THE PASSENGER REPORTED THAT THEY REACHED ABOUT 40 FT AGL, THEN LOST LIFT AND BEGUN TO SETTLE. AS THE TWO-PLACE ULTRALIGHT AIRCRAFT SETTLED, IT WAS HEADED TOWARD AN AIRPORT NOISE ABATEMENT SIGN. THE PILOT ATTEMPTED TO TURN THE AIRCRAFT TO AVOID THE SIGN, BUT THE PLANE STRUCK IT HEAD-ON. AN INVESTIGATION REVEALED THAT THE PLANE WAS 10 LBS OVER ITS MAXIMUM GROSS WEIGHT AND THE DENSITY ALTITUDE WAS 8056 FT.

## Aircraft

- Registration: [N3149Z](https://openairdocs.org/deregistered/N3149Z-2014-12-02), registration cancelled 2014-12-02, S/N 4008, built 1982 (OpenAirDocs)
- Reported make and model: QUICKSILVER MXII
- Registry model: [Anderson James QUICKSILVER MXII](https://openairdocs.org/model/anderson-james-quicksilver-mxii) (registry code 05647TK) (OpenAirDocs)
- Registry engine: [Amateur-built UNKNOWN ENG](https://openairdocs.org/engine/amateur-built-unknown-eng) (registry code 99999) (OpenAirDocs)
- Category: Airplane, amateur-built
- Serial number: 4008
- Airframe hours: 45
- Engines: CUYUNA 430D 30 horsepower reciprocating
- Damage: Substantial damage
- Flight: Personal, Part 91
- Operator: Jamee J. Andersen
- Registered owner: Jamee J. Andersen
- Departed: BJC, BROOMFIELD, CO
- Destination: BJC, BROOMFIELD, CO
- Airport: BJC, Jefferson County Airport, runway 20, 3,601 × 75 ft, asphalt

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 36; private; airplane ratings: single-engine land; medical: class 3, valid medical--no waivers/lim.; flight hours: 250 total, 57 in this make and model, 215 as pilot in command, 57 in the last 90 days, 4 in the last 24 hours

## Weather

- Conditions: Visual (VMC), Day
- Wind: 60° at 7 knots
- Visibility: 15 statute miles
- Temperature: 171 °F
- Altimeter: 30.00 inHg

## FAA reports on this event (1)

The FAA's own accident and incident reports, matched to the aircraft by N-number and date (OpenAirDocs).

- [Accident 19820820039869A](https://openairdocs.org/incident/19820820039869A), Aug 20, 1982: Amtr QUICKSILVER, Broomfield, CO, Substantial damage. Attempted takeoff over gross, down wind and high density altitude. Settled after liftoff and hit an airport sign.

From the NTSB's public API. Aircraft are matched to registry aircraft by N-number and event date, checked against the reported serial number, make and model; the registry's history has gaps, so older matches can be wrong. Compare the reported make and model.

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