KERRVILLE, Texas -- The National Transportation Safety Board recently released their preliminary findings on last month's plane crash in Kerrville.

  • Killed 5 passengers and 1 pilot
  • Flew from Houston to Kerrville
  • Several issues noted during crash

It details everything from the nature of the flight, witness accounts to weather conditions and the altitude of the plane leading up to the crash.

According to the report, the twin-engine Beech plane flew from Houston to Kerrville on business April 22. It had 6 people on board; 5 passengers and the pilot.

READ MORE | 6 Killed in Kerrville Plane Crash Identified

At the time of the flight, it was overcast with 10-mile visibility. The plane was last seen 6 miles from Kerrville's Municipal Airport where it was trying to land.

The NTSB’s initial finding were reviewed by the Texas Aviation Association. TAA’s Jay Carpenter said he noticed a few things in the report.

The plane was flying too low at the time of the crash, only at 2,050 feet, when it is supposed to be flying between 3300 and 4000 feet. He also said the Beech plane was flying too slow at 72 mph. Beech planes must fly at 85 mph to stay airborne, according to NTSB.

Carpenter added that the the plane may have been too heavy with passengers or luggage.

Three witnesses reported seeing the plane flying at low altitude, spiraling down and then crashing into a ravine upright.

Investigators said there was no post-impact fire but everyone on board was killed.

The plane was severely damaged and remains in the NTSB's hands.

This is only the preliminary report. The investigation continues on this crash.

The NTSB said the final report will be released in 12 to 24 months.