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NTSB accident investigation · Balloon Works FIREFLY8 - 24 · Provo, UT · July 2, 2015

Accident · Minor injuriesData collectionFinal report
Date
July 2, 2015, 07:00 local (13:00 UTC)
Place
Provo, UT
Injuries
1 minor, 5 uninjured
Phase of flight
Initial climb
Aircraft
N7148PBalloon Works FIREFLY8 - 24N11UWBalony Kubicek Spol Sro BB30Z
Defining events
Initial climb: Midair collisionInitial climb: Midair collision
Weather
Visual (VMC) · Day
Status
Completed · report August 12, 2015
Report
Approved by Office Director
NTSB office
General Aviation Accidents
Parties
FAA
FAA report
20150702009051A
Case key
91500

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

On this page

Probable cause

**This report was modified on 4/21/2016. Please see the public docket for this accident for more information.** The failure of the Balony balloon pilot to see and avoid the Balloon Works balloon during an ascent, which resulted in the basket of the Balony balloon colliding vertically with the envelope of the Balloon Works balloon.

Findings · 4

NTSB’s coded findings. Those marked are part of the probable cause; the rest are factors or other findings. Under each, the cases with the same finding.

N7148P · Balloon Works FIREFLY8 - 24

Attention/monitoring: monitoring other aircraftPersonnel issues › Psychological · Pilot of other aircraftBalloon Works FIREFLY 8B: 1 caseAll aircraft: 231 casesProbable cause
Object/animal/substance: aircraftEnvironmental issues › Physical environment · Contributed to outcomeBalloon Works FIREFLY 8B: 1 caseAll aircraft: 116 cases

N11UW · Balony Kubicek Spol Sro BB30Z

Sequence of events

The events NTSB coded, in order, by phase of flight. The defining event is the one that best describes the accident. Under each, the cases with the same event anywhere in their sequence.

N7148P · Balloon Works FIREFLY8 - 24

N11UW · Balony Kubicek Spol Sro BB30Z

Analysis

**This report was modified on 4/21/2016. Please see the public docket for this accident for more information.** The pilots of the two balloons involved in a midair collision reported that they both began the takeoff ascent as part of a competition. The Balloon Works balloon pilot, who was lower than the Balony balloon during the ascent, reported that his envelope collided vertically with the basket of the Balony balloon, about 2,000 feet above the ground. The Balony balloon pilot reported that he saw the Balloon Works balloon below him and started to use both of the available burners, but was unable to climb fast enough. A witness to the accident reported that the Balony balloon pilot did not use the balloon's burners until after the collision. After the midair collision, the Balloon Works balloon began to descend about 700 feet per minute and impacted the ground. The pilot of the Balony Balloon reported that he landed without further incident. Both of the pilots reported there were no pre-impact mechanical failures or malfunctions with their balloons or burners that would have precluded normal operation. A postaccident inspection of the Balony balloon revealed no damage to the balloon or the burner. A postaccident inspection of the Balloon Works balloon revealed substantial damage to the envelope.

Factual narrative

**This report was modified on 4/21/2016. Please see the public docket for this accident for more information.** The pilots of the two balloons involved in a midair collision reported that they both began the takeoff ascent as part of a competition. The Balloon Works balloon pilot, who was lower than the Balony balloon during the ascent, reported that his envelope collided vertically with the basket of the Balony balloon, about 2,000 feet above the ground. The Balony balloon pilot reported that he saw the Balloon Works balloon below him and started to use both of the available burners, but was unable to climb fast enough. A witness to the accident reported that the Balony balloon pilot did not use the balloon's burners until after the collision. After the midair collision, the Balloon Works balloon began to descend about 700 feet per minute and impacted the ground. The pilot of the Balony Balloon reported that he landed without further incident. Both of the pilots reported there were no pre-impact mechanical failures or malfunctions with their balloons or burners that would have precluded normal operation. A postaccident inspection of the Balony balloon revealed no damage to the balloon or the burner. A postaccident inspection of the Balloon Works balloon revealed substantial damage to the envelope. According to FAA-H-8083-11A, Balloon Flying Handbook, "There is an unwritten rule in ballooning (not regulatory) that the balloon below has the right of way (due to lack of visibility above). Although the balloon below has the right of way, the higher balloon needs time to climb out of the way, if necessary. Pilots must maintain awareness of other balloons operating near them, particularly in crowded or rally situations." According to FAA-H-8083-11A, Balloon Flying Handbook, "All pilots must be alert to the potential for midair collision and near midair collisions. The general operating and flight rules in 14 CFR Part 91 set forth the concept of "See and Avoid." This concept requires that vigilance shall be maintained at all times, by each person operating an aircraft. Pilots should also keep in mind their responsibility for continuously maintaining a vigilant lookout regardless of the type of balloon being flown and the purpose of the flight." According to the Code of Federal Regulations, Part 91.113(b), "When weather conditions permit, regardless of whether an operation is conducted under instrument flight rules or visual flight rules, vigilance shall be maintained by each person operating an aircraft so as to see and avoid other aircraft. When a rule of this section gives another aircraft the right-of-way, the pilot shall give way to that aircraft and may not pass over, under, or ahead of it unless well clear."

Aircraft · 2

Registration
N7148P
Reported as
Balloon Works FIREFLY8 - 24
Category
Balloon
Serial number
F8BS-01
Built
1999
Airframe hours
238
Engine
Burner Balloon Works F1, none
Damage
Substantial damage
Flight
Personal · Part 91
Operator
Balloons West Inc
Registered owner
Balloons West Inc
Airworthiness certificate
Standard, Balloon
Last inspection
Annual · June 9, 2015
Departed
Provo, UT
Destination
Provo, UT

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
N11UW
Reported as
Balony Kubicek Spol Sro BB30Z (NO SERIES)
Category
Balloon
Serial number
757
Built
2010
Airframe hours
4,740
Damage
No damage
Flight
Personal · Part 91
Operator
Pivic Bruce W
Registered owner
Pivic Bruce W
Airworthiness certificate
Standard, Balloon
Last inspection
Annual · June 28, 2015
Departed
Provo, UT
Destination
Provo, UT

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 N7148P
Age
73
Injuries
Minor
Certificate
Commercial
Airplane ratings
Single-engine land
Seat
None
Restraint
None
Flight hours
3,000 total · 200 in this make and model · 3,000 as pilot in command · 14 in the last 90 days · 14 in the last 30 days · 2 in the last 24 hours
Role
Pilot, aircraft N11UW
Age
56
Injuries
None
Certificate
Commercial
Last flight review
May 17, 2014
Seat
None
Restraint
None
Flight hours
1,200 total · 60 in this make and model

Weather

Conditions
Visual (VMC) · Day
Wind
200° at 3 knots
Visibility
15 statute miles
Lowest ceiling
20,000 ft broken
Temperature
68 °F, dew point 48 °F
Altimeter
30.09 inHg
Observed at
KPVU, 3 nm away

Docket · 5

The files NTSB released with the investigation on August 11, 2015, on NTSB’s docket system: statements, records, photos and specialists’ reports. 7.0 MB in all.

FAA reports on this event · 1

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