I tried the link you provided. I show that "page" as no longer active.
There may be an error with the site. When I accessed the monthly reports I found:
Accident occurred Friday, December 25, 1987 in KEYMAR, MD
WITNESSES HEARD AND OBSERVED THE AIRCRAFT TAKEOFF, BANK TO THE LEFT, AND NOSE DOWN INTO THE ADJOINING DIRT FIELD WITH NO CHANGE IN ENGINE SOUND. EXAM OF THE WRECKAGE REVEALED THAT AN ELEVATOR CABLE HAD SEPARATED AT A POINT WHERE GROUNDING STRAP WAS FOUND TO BE HANGING LOOSE FROM THE BATTERY BOX. BOTH THE CABLE AND THE STRAP WERE FOUND TO HAVE EVIDENCE OF ARCING AND EACH CONTAINED ELEMENTS ASSOCIATED WITH THE OTHER IN THE AREA WHERE THE ARCING DAMAGE WAS FOUND.
It is sad to hear about these accidents.