LAX00LA289

NTSB accident investigation · Cessna 172K · Palo Alto, CA · July 15, 2000

Accident · No injuriesLimited investigationFinal report
Date
July 15, 2000, 11:00 local (18:00 UTC)
Place
Palo Alto, CA
Injuries
4 uninjured
Phase of flight
Taxi
Aircraft
N79004Cessna 172KN7271RBeech 58
Weather
Visual (VMC) · Day
Status
Completed · report January 2, 2002
Report
Approved by Office Director
Case key
49933

From the NTSB’s public API. By law, NTSB reports can’t be used as evidence in lawsuits over the accident.

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Probable cause

The pilot of the other airplane's (Cessna) inadequate visual lookout and misjudged distance to the standing Beech.

The Cessna pilot's inadequate visual lookout and misjudged distance to a standing Beech while taxiing for takeoff.

Sequence of events

NTSB’s coding before 2008: each occurrence and phase of flight, and the causes and factors under it. The codes are defined in NTSB’s coding manual.

On ground/water collision with objectTaxi - to takeoff
Object - aircraft parked/standing
Visual lookout - inadequatePilot in commandCause
Distance/speed - misjudgedPilot in commandCause
On ground/water collision with objectStanding - engine(s) operating
Visual lookout - inadequatePilot of other aircraftCause
Distance/speed - misjudgedPilot of other aircraftCause

Analysis

The pilots of a Beech (Baron) and a Cessna planned to depart using runway 31, and taxied toward the runway's engine run-up area. Upon arrival, the Baron pilot found the area fully occupied by six other airplanes, so he held short. The Cessna pilot stopped in trail behind the Baron. After a few minutes, an airplane vacated the run-up area, and the Baron pilot applied engine power to reposition his airplane in the run-up area. The Cessna pilot attempted to pass the Baron by proceeding between the Baron's right wing and another airplane, to the Cessna's right side. The Cessna pilot indicated that he misjudged his clearance, and the leading edge of his left wing impacted the rear of the Baron's rotating propeller blades.

The pilots of a Beech (Baron) and a Cessna planned to depart using runway 31, and they taxied toward the runway's engine run-up area. Upon arrival, the Baron pilot found the area fully occupied by six other airplanes, so he held short. The Cessna pilot stopped in trail behind the Baron. After a few minutes, an airplane vacated the run-up area, and the Baron pilot applied engine power to reposition his airplane in the run-up area. The Cessna pilot attempted to pass the Baron by proceeding between the Baron's right wing and another airplane, to the Cessna's right side. The Cessna pilot indicated that he misjudged his clearance, and the leading edge of his left wing impacted the rear of the Baron's rotating propeller blades.

Factual narrative

On July 15, 2000, about 1100 hours Pacific daylight time, a Cessna 172K, N79004, operated by the Happy Pilots Flying Club, Inc., Santa Clara, California, taxied into a Beech 58, N7271R, operated by its pilot-owner, at the Palo Alto Airport of Santa Clara County, Palo Alto, California. When the collision occurred, the Cessna pilot was attempting to taxi around the stationary Beech, which was holding on a taxiway leading to runway 31. The Cessna's left wing was substantially damaged, and propeller blades on the Beech's right engine sustained minor damage. There were no injuries to the private pilot and passenger in the Cessna, or to the commercial pilot and passenger in the Beech. The flights were being performed under 14 CFR Part 91, and visual meteorological conditions prevailed. Both airplanes' flights were originating at the time of the accident.

The Cessna pilot subsequently reported that minutes prior to the collision, he had taxied toward the engine run-up area associated with runway 31 where he observed the standing Beech (Baron). After waiting a few minutes, he decided to attempt to pass the Baron. The Cessna pilot reported that while maintaining clearance from an (unspecified) airplane to his right, he "misjudged" his clearance from the Baron. The leading edge of the Cessna's left wing contacted the rear of the Baron's right engine rotating propeller blades.

The Baron pilot subsequently reported that the accident occurred after he had taxied from his tie-down spot and was holding on the centerline of the taxiway leading to the run-up area. He indicated that he was waiting for a place to open in the run-up area because it was full. There were at least six airplanes in the area awaiting clearance for takeoff. The Cessna was behind the Baron. As a place opened in the run-up area, the Baron pilot advanced the throttles to occupy the available spot. Just at that moment, the Cessna attempted to pass the Baron on its right side. The Cessna was moving rapidly. The Cessna's left wing overlapped the Baron's right wing and was lacerated by the Baron's propeller blades.

On July 15, 2000, about 1100 hours Pacific daylight time, a Cessna 172K, N79004, operated by the Happy Pilots Flying Club, Inc., Santa Clara, California, taxied into a Beech 58, N7271R, operated by its pilot-owner, at the Palo Alto Airport of Santa Clara County, Palo Alto, California. When the collision occurred, the Cessna pilot was attempting to taxi around the stationary Beech, which was holding on a taxiway leading to runway 31. The Cessna's left wing was substantially damaged, and propeller blades on the Beech's right engine sustained minor damage. There were no injuries to the private pilot and passenger in the Cessna, or to the commercial pilot and passenger in the Beech. The flights were being performed under 14 CFR Part 91, and visual meteorological conditions prevailed. Both airplanes' flights were originating at the time of the accident.

The Cessna pilot subsequently reported that minutes prior to the collision, he had taxied toward the engine run-up area associated with runway 31 where he observed the standing Beech (Baron). After waiting a few minutes, he decided to attempt to pass the Baron. The Cessna pilot reported that while maintaining clearance from an (unspecified) airplane to his right, he "misjudged" his clearance from the Baron. The leading edge of the Cessna's left wing contacted the rear of the Baron's right engine rotating propeller blades.

The Baron pilot subsequently reported that the accident occurred after he had taxied from his tie-down spot and was holding on the centerline of the taxiway leading to the run-up area. He indicated that he was waiting for a place to open in the run-up area because it was full. There were at least six airplanes in the area awaiting clearance for takeoff. The Cessna was behind the Baron. As a place opened in the run-up area, the Baron pilot advanced the throttles to occupy the available spot. Just at that moment, the Cessna attempted to pass the Baron on its right side. The Cessna was moving rapidly. The Cessna's left wing overlapped the Baron's right wing and was lacerated by the Baron's propeller blades.

Aircraft · 2

Registration
N79004
Reported as
Cessna 172K
Category
Airplane
Serial number
17257801
Engine
Lycoming O-360-A4M, 180 horsepower, reciprocating
Damage
Substantial damage
Flight
Personal · Part 91
Registered owner
Happy Pilots Flying Club, Inc.
Airworthiness certificate
Standard, Normal
Last inspection
Annual · July 1, 1999 · 80 hours before
Flight plan
Unknown
Airport
PAO · Palo Alto

Matched to the registry by N-number and the event date; the registry’s history has gaps, so older matches can be wrong. Compare the reported make and model.

Registration
N7271R
Reported as
Beech 58
Category
Airplane
Serial number
TH584
Airframe hours
2,616
Engine
Continental IO-520-C, 285 horsepower, reciprocating
Damage
Minor damage
Flight
Personal · Part 91
Registered owner
William I. Cohen
Airworthiness certificate
Standard, Normal
Last inspection
Annual · November 17, 1999 · 53 hours before
Airport
PAO · Palo Alto

Matched to the registry by N-number and the event date; the registry’s history has gaps, so older matches can be wrong. Compare the reported make and model.

Flight crew · 2

As NTSB recorded them. NTSB leaves out names.

Role
Pilot, aircraft N79004
Age
69
Certificate
Private
Airplane ratings
Single-engine land
Instrument ratings
Airplane
Medical
Class 3, Valid Medical--w/ waivers/lim
Seat
Left
Flight hours
441 total · 314 in this make and model · 311 as pilot in command · 10 in the last 90 days · 8 in the last 30 days
Role
Pilot, aircraft N7271R
Age
65
Certificate
Commercial
Airplane ratings
Single-engine land, Multi-engine land
Instrument ratings
Airplane
Medical
Class 2, Valid Medical--w/ waivers/lim
Seat
Left
Flight hours
3,945 total · 1,700 in this make and model · 3,945 as pilot in command · 19 in the last 90 days · 5 in the last 30 days

Weather

Conditions
Visual (VMC) · Day
Wind
20° at 7 knots
Visibility
10 statute miles
Lowest ceiling
20,000 ft broken
Temperature
145 °F, dew point 131 °F
Altimeter
30.00 inHg
Observed at
PAO

FAA reports on this event · 2

The FAA’s own accident and incident reports, matched to the aircraft by N-number and date.