ATL04LA183
2004-09-12 · San Juan, Puerto Rico, United States · None · 1 aircraft · Status: Completed
Airport TJIG
Current FAA registration · N5546Z
- Make / Model
- PIPER PA-18-150
- Year of manufacture
- 1962 · 42 years old at event
- Engine
- LYCOMING O-360-C4P (180 hp)
- Seats / Engines
- 2 seats · 1 engine
- Last airworthiness date
- 20060623
- ADS-B equipped
- Yes — Mode-S A71189
Source: FAA Aircraft Registry (releasable master file).
Aircraft involved
Probable cause & findings
The pilot's failure to apply carburetor heat which resulted in carburetor ice and the subsequent loss of engine power. A factor was weather conditions favorable for carburetor ice.
Factual narrative
On September 12, 2004, at 1400 eastern daylight time, a Piper PA-18, N5546Z, registered to and operated by Aerial Sign of Puerto Rico, operating as a 14 CFR Part 91 local flight, collided with a fence during an attempted forced landing at Fernando Luis Ribas Dominicci Airport, San Juan, Puerto Rico. Visual meteorological conditions prevailed and no flight plan was filed. The airplane sustained substantial damage, and the commercial pilot was not injured. The flight departed Fernando Luis Ribas Dominicci Airport, San Juan, Puerto Rico on September 12, 2004 at 1245. According to the pilot, he completed banner tow operations in the local area, released the banner and made a left climbing turn. During the climb, the pilot reported that the engine lost power. Efforts by the pilot to restore engine power were unsuccessful. The pilot maneuvered the airplane to the right towards the approach end of runway 27. The pilot stated "due to low altitude, low airspeed, and the prevailing winds from the north it was impossible to complete the turn to the right to land on runway 27". The pilot elected to land on the available part of runway 27. The airplane was flying on a 120-degree magnetic heading and landed across the runway surface. The airplane continued to roll on an approximate 120-degree magnetic heading into the grass, collided with a fence, and came to rest in a construction zone 90 feet from the touchdown point. The pilot did not report any mechanical malfunctions with the airplane prior to the accident. The wreckage path was approximately 30 feet wide and 25 feet long. Examination of the airplane revealed the wings detached, the main landing gear collapsed and damage to the engine and propeller. Also, two engine mounts were broken and the firewall was buckled. The fuel tanks were breached but more than 12 gallons of fuel was recovered from the left tank. Further examination on the engine was conducted on September 21, 2004 and September 28, 2004 by a Federal Aviation Administration Airworthiness Inspector. The airworthiness inspector found no anomalies with the engine. The pilot stated that he topped off both fuel tanks prior to the accident flight. The pilot did not report using carburetor heat during the flight. The weather conditions at the time of the accident were wind 360-degrees at 8 knots, visibility 10 miles, temperature 31-degrees Celsius and dewpoint 26-degrees Celsius. The pilot completed banner tow operations and made a left climbing turn. During the climb the airplane lost engine power. The pilot was unsuccessful in restoring the engine power. The pilot maneuvered the airplane to the right towards the approach end of runway 27. The airplane, on a 120-degree magnetic heading, landed across the runway surface, rolled into the grass and collided with a fence. The pilot did not report any mechanical malfunctions with the airplane prior to the accident. Examination of the airplane revealed the wings detached, the main landing gear collapsed and damage to the engine and propeller. The examination further showed that the fuel tanks were breached but more than 12 gallons of fuel was recovered from the left tank. The examination of the engine failed to disclose anomalies. The pilot did not report using carburetor heat during the flight. The weather conditions at the time of the accident were wind 360-degrees at 8 knots, visibility 10 miles, temperature 31-degrees Celsius and dewpoint 26-degrees Celsius. The review of the icing probability curves disclose conditions favorable for the formation of carburetor ice. Source: NTSB Aviation Accident Database (Pre-2008 Archive) Retrieved: 2026-02-12
Verbatim from NTSB's published report. Source file
NTSB_2004_ATL04LA183.txt.
Findings + structured fields enriched from FAA avall.mdb.
Full investigation docket on
data.ntsb.gov ↗.
Search this event elsewhere
External sources are reported, not agency: signal that something happened, not fact about what happened.
- TallyAero Live Wire Aviation press
- NTSB CAROL Agency ↗
- NTSB Docket Agency ↗
- Aviation Safety Network Aviation press ↗
- Kathryn's Report Aviation press ↗
- Aviation Herald Aviation press ↗
- AVweb Aviation press ↗
- Pilots of America Community ↗
- Reddit /r/flying Community ↗
- FlightAware Aviation press ↗
- AOPA accident database Aviation press ↗
- Google News News ↗
- DuckDuckGo News ↗
Related research
Matched on aircraft type or causal vocabulary (icing). All research papers
- arXiv 2026 · arXiv preprint Enabling Beyond-Visual-Line-of-Sight Drones Operation over Open RAN 5G Networks with Slicing
Among the foretold claims of the transition from 5G to 6G, Beyond-Visual-Line-of-Sight (BVLoS) drone operation has emerged as a prominent Internet-of-Robots enabler.
- NASA NTRS 2026 · Contractor Report (CR) Icing Physics Studies Using the 3D SIDRM Test Article: 2023 Icing Tests Analysis
In-flight icing is an important safety issue and is a factor that affects aircraft design and performance. Newer regulations are driving a need for improvements in airframe and engine icing simulation…
- arXiv 2025 · arXiv preprint Multi-Agent Deep Reinforcement Learning for UAV-Assisted 5G Network Slicing: A Comparative Study of MAPPO, MADDPG, and MADQN
The growing demand for robust, scalable wireless networks in the 5G-and-beyond era has led to the deployment of Unmanned Aerial Vehicles (UAVs) as mobile base stations to enhance coverage in dense urb…
- NASA NTRS 2025 · Presentation NASA Icing Update – March 2025
This NASA Icing Update was prepared for presentation to the SAE International AC-9C Inflight Icing Technology Committee. This update includes the following topics: planned Rotational Icing Scaling tes…
- Embry-Riddle Scholarly Commons 2025 · Journal article (JAAER) A Mathematical Model on the Temporal Dynamics of Aviation Competitive Pricing
This study investigates the competitive dynamics of airport pricing using U.S. airport data to validate the findings. It employs linear and nonlinear ordinary differential equation models to analyze t…
- arXiv 2024 · arXiv preprint An energy-stable phase-field model for droplet icing simulations
A phase-field model for three-phase flows is established by combining the Navier-Stokes (NS) and the energy equations, with the Allen-Cahn (AC) and Cahn-Hilliard (CH) equations and is demonstrated ana…